Why You Get Poor Reception In Some Areas.
The key to understanding why you get dropped calls and areas with no signal is understanding how the cellular and PCS phone systems work. It is nerdy, geeky stuff, but knowing it will help you get better cell phone reception.
Some cellular carriers are better than others for certain areas. No offense, but yours might stink for where you are or where you travel. It all boils down to how the system evolved a couple of decades ago when companies began buying up licenses and staking out their territories. Back then the big "Bells" and smaller companies bought licenses from the FCC for certain territories.
Some areas were simply not worth it to some big companies to pay the fees for since not that many people used phones in them at that time. In those areas small cellular providers hold the licenses and determine who they will let roam on their system. Other areas are dominated by the major companies who also can decide who they let use their system. Southwestern Bell, which Became Cingular and then AT&T, for example, holds the licenses to operate towers using the 800 Megahertz band across a wide part of the South. Why do you get better cell phone reception with some carriers?
This 800 Megahertz frequency can travel farther, enabling cell towers to be spaced farther apart and serve an area as much as thirty miles or more in diameter. There were two licenses in this band given out, so in a given area only two companies would provide this superior, far reaching signal. Users of these 800 MHZ phones could roam on the other companies towers, usually for a hefty fee, but the plus was that they could have a wide coverage area. If you are lucky enough to live an travel in an area where your phone operates on 800 Mhz you will get pretty good coverage.
Compatibility, CDMA and GSM
In addition to there being two different bands, 800 and 1900 Mhz, there are also different ways of transmitting the signal, similar to AM vs FM, that are used by the cellular companies. Alltel and Verizon use a type called CDMA and AT&T and many other companies use GSM. The two are not compatible so even if you happen to be in an area where there are towers belonging to another company you cannot "roam" on them since your phone is not compatible. Recently some of the CDMA carriers like Alltel have put in a couple of channels on their cell towers for AT&T GSM users but AT&T has so far not reciprocated in the areas where they are dominant with CDMA channels for Alltel and Verizon users to use.
The FCC decided more "channels " were needed to open up competition but the only other band available was 1900 Megahertz, a higher band that does not transmit as far. That is why you get better cell phone reception on 800 MHZ. The 1900 MHZ service became known as PCS, and companies like Sprint began to fill a niche market of city dwellers who wanted cheap cell phones. They realized they had a problem though in that those city dwellers liked to go to the country once and a while and needed their phones to work out there.
Companies like Sprint made a deal with the larger companies who had the 800 Mhz towers to use the less desirable analog signal part of their system while the 800 Mhz license holders moved away from analog and converted most of their own subscribers to 800 MHZ digital. Analog, with scratchy sounding calls and static became the stepchild of the industry but the FCC made the big carriers keep providing this service and allowing companies like Sprint to let their customers roam on the system.
As far as 800 Mhz versus 1900 Mhz in general, the entire US became carved up this way, with some companies having the better system in some parts of the country and others left to use the 1900 Mhz band with 800 Mhz analog roaming if it was offered to subscribers.
Now many of the large companies use both bands, PCS 1900 and 800 in order to have better coverage area. So, in a nutshell, todays major providers of cell phone service use a hodgepodge of systems to keep their customers connected in areas where they do not have the superior license.
Verizon Wireless for example has a large 800 Mhz presence in part of the Eastern United States and excellent coverage there. In South, Central and East Texas hough, most of its network is PCS or 1900 with it's short range towers which only work for 15 miles or so and to keep customers connected they have to put up hundreds of these towers along the interstates and towns.
Since cell towers are expensive to build and maintain you can understand why in those areas they don't put them up on rural roads. In those areas, where they did not have the license to the better 800 Mhz towers, companies like Verizon and Sprint relied on the old analog system (which the FCC made the big companies share) for its customers to use to connect out in the rural areas.
Now that's all coming to an end and Verizon and Sprint customers are about to get left out in the cold since the FCC is not going to require the companies with 800 Mhz licenses to let those companies customers roam on the 800 system.
Goodbye Analog, Crackly Old Friend! Due to the "economic demand for other uses" for the analog band, which is a lower part of the 800 Mhz band, the FCC and phone companies worked out a deal for it to die a slow death so that those frequencies could be sold for some other kind of service.
Effective January 1, 2008 those companies that own the licenses for the long range, 800 Mhz towers will not have to share their analog signal anymore. So Verizon and Sprint are now out of luck when their users travel in areas where their company does not own an 800 Mhz tower. (Sprint owns none to my knowledge) but Verizon has a vast system that works well in the East Coast and utilizes Alltel's Digital 800 system as an "extended network" in the Western states. AT&T on the other hand has good 800 coverage throughout most of Texas but poor coverage in the mountain states where Alltel and small companies hold most of the 800 licenses. It seems like they would work something out but don't expect anything in your lifetime.
There is no incentive for them to share systems. It is appalling to me that the FCC would leave those customers of Sprint and Verizon out in the cold, especially since they will not even be able to make a 911 call in those areas where analog 800 Mhz was the only signal available. Even Onstar, on GM vehicles, used to use analog cellular and that is why an Onstar call could be made almost anywhere. Not anymore, now they use plain old Verizon Digital (800 - 1900) with all of its limitations.
Why You Might Need Two Phones if You Really Need to Stay in Touch. Cell phone Boosters Might Not Be Enough
As an oilfield worker I stay for weeks on end at rigs located in remote parts of the country such as ranches out in the desert of New Mexico and parts of West and South Texas where the towns are far and few between. Companies like Verizon Wireless do not own any 800 Mhz towers in South Texas and now that analog is being phased out I will not be able to get a signal in the middle of a large ranch 10 miles off the highway. AT&T Works best in South Texas. Verizon (Alltel) works best in most of New Mexico.
The 1900 Mhz towers mostly just cover the interstates and towns and the signal, even with a cell phone booster (which we bill discuss later) it is hard to get. My Verizon Phone will barely work in some of these areas in South Texas but my AT&T phone will since AT&T holds the preferred 800 Mhz licenses there. On the other hand I also work in far West Texas and New Mexico, where Alltel (who partners with Verizon) has a strong 800 Mhz system. My Verizon phone works well there but my AT&T phone, which only has access to a 1900 Mhz network, does not work very well. Because I have to stay connected I must have two phones, one Verizon Wireless and one AT&T Wireless. AT&T Works best in South Texas. Verizon (Alltel) works best in most of New Mexico. One good way to find out what service works best in rural areas is to note what wireless company stores are most common in that area. Also, talk to delivery people, real estate agents and others in that area and ask who they use. The best carrier will be the one with the license for 800 Mhz towers. (Generally speaking.)
The same situation as I just described is throughout the entire US. In one area your phone may work well in the rural areas, and in other places it won't. If you have T Mobile or Sprint which are 1900 Mhz only, you will have trouble in remote areas anywhere in the US, period.
Which Carrier is Best For Your Area?
You will have to take a look at the coverage maps below. Personally I can only speak for a few general geographic areas where I work, Texas and New Mexico and Oklahoma and occasionally the Mountain states. if you are a truck driver, for example whose route is mainly in South, Central, East and North Texas (with some exceptions), you are better off with AT&T. If your route is west of Midland Texas and out toward the West Coast, you are better off with Verizon and Alltel in my experience.
Verizon Wireless Coverage Map (similar to Alltel map)
Note the spotty looking areas though parts of the West, along the southern part of Texas, up through the Mid South, and Northeast. Some of those areas such as in South Texas, are served only by 1900 Mhz towers which have short range, other dead zones (white area) in the West are the result of mountains causing reduced coverage. Whenever you see the little dots following the major interstates, the coverage in that area is 1900 Mhz, as seen in southern Texas. Note that Verizon has strong coverage up through the panhandle of Texas, throughout the Midwest and over toward the Great Lakes as well as through much of the South. Alltel's coverage is virtually identical since they share systems.
AT&T - Cingular
Note that there is strong coverage throughout most of Texas Oklahoma and Louisiana but coverage is spotty out west were most of the system is 1900 Mhz. You will need to determine in what part of the country you will be using your phone the most and choose a company accordingly. For the Western states and the Midwest it looks like Verizon and Alltel have the advantage.
Choosing a Provider
You will have to choose which carrier you will go with that is best in your area. Some of the regional cellular providers such as US Cellular, have good roaming agreements with one of the big three, Verizon, AT&T or Alltel so you may be OK with them. If you plan on traveling in rural areas, avoid the "PCS only" companies such as Sprint and T-Mobile. They will never have the coverage area you need if you are a traveler. In any case, if you do end up roaming in an area where your carrier just has access to the 1900 Mhz towers, your reception will suffer in the rural areas.
There is something that you can do to help your odds of getting a good signal and being able to make calls, whether you are in a good 800Mhz area or in a PCS area.
I Need More Power Scotty! How To Boost Cell Phone Reception In Rural Areas. Cell Phone Booster Basics
Your cell phone was designed to work well in the city, near cell towers and it was never engineered to pick up faraway towers in the mountains and out in the desert. When it comes to antennas, size does matter and your cell phone's internal antenna is just too small to do the job. Antennas of any kind are rated by how much gain they have and how much they either boost or hurt the signal. Your cell phone's little internal antenna actually has a negative gain rating in decibels, meaning it hurts your reception by being so tiny. You also need to get your signal outside of the metal cab of your vehicle, which blocks about half of it's power, and you also need an antenna that will help, not hurt your signal by boosting it a few times.
Compatibility Of Cell Phone Boosters With Newer Phones
Back when I was trucking I was often frustrated by not having any coverage on my trucking routes especially on runs to the West Coast. At first I tried an external antenna, which plugged into the back of my cell phone. It was a 6 db gain magnetic mount from Wilson that I bought at a truck stop. It did help but there were still quite a few areas where my signal was poor.
After talking to some other drivers I bought a Wilson cellular amplifier at a cellular phone store in Midland Texas for just under $400 and connected it to the antenna. The problem was that the amplifier and antenna always had to be connected directly to the back of my phone. I would have to plug it in, and deal with a cord on my phone. Since then I have had at least a dozen cell phones from different makers, each requiring a different antenna adapter that I would have to order online and then wait several weeks for it to arrive or before I managed to get back home to get it, often to find out they had sent me the wrong one.
Then in about 2005 my newer cell phones from AT&T and Verizon began to come with no plug on the back for an antenna at all. The cell phone booster dealer recommended a square stick on patch cord connector that was supposed to transfer the boosted signal into the phone. (They did not work). In the end, between buying adapters for each of my dozen phones I have spent somewhere around $700 in the last decade on my directly wired booster, only to now have it become useless since now I cannot connect it to my phone.
Repeater Type Cell Phone Boosters
After talking to a lot of people
who were in similar situations, I found
that many of them were using repeater type cell
which act like mini cell towers. They use an in-cab antenna
located somewhere in the vehicle to pick up the
signal from your phone which is then amplified
up to about 40 decibels by the amplifier. Three watts is the maximum legal
limit and most repeater type amplifiers come
close to this in terms of output. (Your cell phone only puts out about
2/10 of one watt). From the amplifier it goes on
to an antenna on the outside of the vehicle and
is transmitted to the cell tower. I was
skeptical at first that it did not have a direct
connection to the phone but the proof is in
actually driving across country and testing it
in places where you normally don't have a
signal. Now that I work in the oilfield I often
end up working in some of the most remote places
in the United states, far off the paved road,
where I need to use the amplifier to get a
signal. A cell phone amplifier is not going to get you a signal everywhere, but I'll have to say, the
repeater type cell phone booster does work
amazingly well in many of the more remote places that I go. As far as on the highway, on several trips from San
Antonio across to Phoenix on I-10 and back, I
found very few places where I did not have at
least 3 bars and in most a full 5 bars on my Verizon Phone. In a notoriously bad area on
IH-10 near the town of Sheffield, where I
usually lost reception, I experimented on half a
dozen different trips with turning the amplifier
on and off only to watch the bars on my phone's
signal strength meter go completely away and
then read "no service" and then to plug it in
again and see at least 3 or more bars come back. In areas where I had the same
problem with my AT&T phone, in Nevada, I tried
the same thing and got the same good results.
Now I never leave on a cross country trip or to
work in the oilfield without my amp. When I am at an oil drilling rig
site in a remote area, I hook it up inside my
trailer to an AC adapter I bought from Radio
Shack and a magnetic mount antenna I got from a Petro Truckstop that I place on the roof
outside. (Note: There is actually a home model
that works better for use in trailers, RV's and
homes but you can improvise by using a 12 volt power supply.) Some of the oilfield trailers that I have
stayed in lately have these cell phone amps already installed
for workers to use in fringe areas. Occasionally when the signal is
very weak, such as down in a valley, I set up a
eight element directional yagi antenna on the roof of my
travel trailer which has 13 db of gain. In one
area where we drilled an oil well, in Pecos
county, Texas, we were down in a deep canyon
about 20 miles from the nearest tower which was
located out near IH-10. I put the directional
antenna on a length of 20' pipe, connected it to
the repeater cell phone booster - amplifier on an ac adapter, and all of us
were able to make and receive calls.
NOTE: You will encounter places where you will not be able to grab a cell phone signal, even
with the most powerful directional antennas or amplifiers. For locations such as these you
may want to consider a satellite phone, if communication is absolutely necessary, and if one
is within your budget. Not everyone can afford a sat phone but there are alternatives that are affordable. New satellite messenger devices such as the DeLorme InReach Explorer Two Way Satellite Communicator
utilize the Iridium satellite network and allow you to send two way text messages almost anywhere on earth as well as send an SOS emergency call to a worldwide response center. These
devices are much more affordable than satellite phones and for this reason I carry one in my truck at all times in case of emergency, or to send a quick text to the family. The plan that I currently have costs $25 per
month and gives me 40 free text messages per month, with extra ones costing 50 cents each.