Is not the signal...already encrypted by the carrier. Encrypt the file b4 you send it...no. Our cell phone signal is already encrypted.
All cell phones are limited in transmit power by the FCC but reception sensitivity can vary a little bit by manufacturer. The biggest variable is the the cell phone carrier (Sprint, Verizon, AT&T, etc.). Find the carrier that has the strongest signal in the area you're most concerned about. Then choose a phone that uses that carrier.
Most of the major carrier offer cell phone boosters for sale in their stores. The best place to find cell signal boosters however would be Best Buy.
A branded cell phone is a phone sold exclusively through one carrier. The cell phone will usually have the carrier's logo/brand on it.
No. Each carrier has allowed cell phones for their carrier. If you have a GSM carrier though, you can buy an unlocked phone to use on that carrier even if the carrier doesn't support the phone. All you do is move your sim card.
A cell phone booster can help with signal in mountains or even inside homes that do not receieve good signal. Each wireless carrier has boosters available and can discuss the specific coverage.
Verizon
no
cell phone
The best cell phone carrier depends on you. It is up to you to decide which cell phone carrier would be the best. Each person has their own picks and what works for one might not work for you.
Sprint
Yeah totally.