iPhone 3G: How to turn 3G off and on
The iPhone 3G is great, but sometimes it's just not practical to keep 3G turned on.
- Perhaps you're in a region that doesn't have 3G coverage, or the signal is very weak.
- It may be that you'd rather sacrifice cellular data speed and call quality for longer battery life and talk time.
- You may be dropping cellular connection all together because the iPhone isn't switching between 2G and 3G automatically.
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