cell phone serivce which cellphone service is the best and have less drop call?

If you have good coverage, only AT&T is known to drop a huge percentage of their calls.

Any carrier can drop a call when you are in poor signal areas.

Verizon has the best over-all coverage in the US, T-Mobile has the smallest coverage area, followed by Sprint, and AT&T.

AT&T has a tendency to drop calls, regardless of how strong of a signal you have, especially in larger cities, where they have failed for years and years to build-up their network to meet the demands of the new customers added as a result of the iphone.

Depends on where you live. All the carriers in the US have 30 day return policies, make sure you take advantage of it. In different cities, different carriers will have stronger signals for you, depending on who has the closest towers. I live in St. Louis, have at&t and never drop a call. With verizon, I had horrible service. There a lot of people who complain about at&t, but it seems they are all Iphone users. And as people around the world complain about the same problem, it sounds more like the phone instead of the system.

You get just as many people bad mouthing verizon over their billing practices. They have the highest term fees, the highest internet/email access fees, and there is legal action coming from the FCC for phantom charges.

Sprint's claim is they have the only 4G. But many experts claim that WiMax is not 4G, but a different version of 3G..

I try to keep up to date on all the carriers, but with everything changing so quickly, it becomes difficult. For every person who says at&t is better, you can find someone saying verizon is better. And someone else who swears sprint is better than both. So it becomes difficult to say who is better. Try out the return policies and see which one works best for you. Everyone is going to have different opinions. Make yours the one that counts...