Verizon iPhone 4 versus AT&T iPhone 4 should know what differences between Verizon and AT&T 3G networks. We got reported that One of the differences between Verizon CDMA technology and AT&T GSM/UTMS is that GSM might be a bit more battery-friendly, but Verizon having better coverage overall whereas AT&T may still have better coverage in specific areas and suit for you who don’t travel a lot and AT&T has better coverage in your hometown.
Here is table from endgadget you should consider :
AT&T Verizon
| Price (on contract) | $199 16GB, $299 32GB | $199 16GB, $299 32GB |
| Data plan1 | $15 / 200MB$25 / 2GB$45 / 2GB with tethering | $15 / 150MB?$29.99 / unlimited?$49.99 / unlimited with 2GB tethering? |
| Early upgrades available at launch | Yes | No |
| Global roaming capability | Yes | No |
| Simultaneous voice / data on 3G | Yes | No |
| WiFi mobile hotspot option | No | Yes |
| 4G data (HSPA+ / LTE) | No | No |
| Rated talk time | 2G voice: 14 hours3G voice: 7 hours 3G web: 6 hours WiFi web: 10 hours |
2G voice: Not available3G voice: 7 hours 3G web: 6 hours WiFi web: 10 hours |
One thing you should know that CDMA cannot use RUIM or SIM card and make more difficult to switch handset. Another your consideration is about speed of AT&T has faster in 3G network and in AT&T you can use Voice and Data Simultaneous, although Verizon should fix this problem soon this year.
