GSM is a type of digital mobile phone service. The more common type of digital mobile phone service in the US is CDMA, but just about every other country in the world uses primarily or only GSM. For you as the user of your phone, there is no difference at all between using a phone on a CDMA system or a phone on a GSM system. Unfortunately, the two different systems are not compatible with each other.

Yes. By default, all our phones are made to work with English menus, however, most of the other European Languages are also supported. Please make sure to inform us in advance should there be a need for additional language support.

We're not sure about this. Certainly, if they physically have your phone, they can get it to display its current lock status, but when you have the phone, we're not sure. It might be possible, in theory, for them to interrogate the phone through the cell service control signals, and get the phone to advise of its status, but we've never heard of this being done.

In the US, Canada and Japan the GSM cell phone services are provided on different frequencies than it is done in Europe. If you live in one of these countries, to be able to use your GSM cell phone while in Bulgaria you should check if your phone is a "tri-band" one, i.e. it supports the European frequencies for GSM (900Mhz/1800Mhz) as well as your local GSM standard - 1900Mhz. It means that technically you are equipped with interoperable device.

Your cellphone may work in the Caribbean. Your roaming service can be extraordinarily expensive to use in the islands and locals will be very reluctant to give you a call. Calls to the US can be quite high. We have purchased a good quad band phone which is "unlocked". This means that you can put other companies SIM cards and switch services. Naturally the phone companies don't like this possibility and as far as I know only T-Mobile will give you the unlock codes.

Good question. Choosing which cellular service to use is almost as difficult as choosing a motorhome! There are many different plans available, and you will have to research to determine which one will work best for you. It may depend on what part of the country you intend to work, what your time usage needs are, what your budget is and many, many more factors.

If your mobile service provider is partnering with sms5050.com then you will be able to access these services.To see our list of partners, click here.

It is a rare event that one of our cell phones wouldn't work and extremely rare for a SIM card not to be working. We personally test all our phones and other equipment prior to sending them out to ensure quality service and no defects. Statistically, less than 1% of all GSM cellular phones are defective and less than 1 in 10,000 SIM cards are defective. We suggest you double-check with the manual to make sure you are using the handset in the proper manner, and then try again.

Yes. If you can setup your cell phone as a modem to your laptop or PDA, then you can use it to dialup to one of our access numbers.

Not really. There are towers located in the Rainy River, Nestor Falls and Baudette areas, but they are unreliable in Morson. Some people can get a signal, others cannot. It seems analogue phones work better than other types, but don't count in being able to use your cell phone when you're in the area.

Yes, in fact MAP's Answering Service plans give you the ability to forward any number of business or personal line(s) to your exclusive toll free 800 number.

Most new hearing aids contain RF immune circuitry and about half contain a telecoil. These digital hearing aids are designed to be usable with wireless devices with lower RF emissions and magnetic coupling ability. Your hearing healthcare professional will be able to tell you if your hearing aid is immune to RF interference and may need to contact the manufacturer of your hearing aid to determine its immunity rating.

Yes, all our GSM mobile phones are FACTORY unlocked - they will work with any GSM SIM card from any country on earth - so you needn't be tied into any specific carrier or contract. Every time you change the SIM CARD the GSM phone becomes whatever the new SIM CARD is. I.E. a new telephone number, memory for credit, the ability to work in the new country etc.

The Thuraya satellite phone user terminal operates on a dual frequency of GSM 900 MHz and satellite at a 1.6/1.5 GHz range and therefore requires additional hardware for such dual band operations. The Thuraya satellite phone uses a Quadrifilar helical L-band antenna consisting of helices wound on a cylinder, which give it a larger in size compared to normal GSM antennas.

Answer: No, Vehiclepath provides a complete service including the tracker, software and network connectivity to the tracker. All you need is a PC with an internet connection and a vehicle to track!

A cellular phone can be extremely helpful in the event of an emergency but cannot be relied upon. Communication is available only on some segments of the trails and only at some of the huts. From our experience, reception can vary, depending on location and quality of the phone. We ask that you keep the phone in the bottom of your pack, and that you respect others by not using it inside the hut. Most people go to the huts to get away from phones!

Yes. If you register over the phone, you will have to call the Do Not Call Registry from your cell phone.

We need to validate your cell phone number to make sure that you can update your shirt from your phone, receive contact notifications and use other such features.

with any cellular system, just like in the United States, reception varies as you travel, particularly in rural areas, but service in most European business centers is first-class - usually far superior to cellular service in the US.