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In earlier versions of iOS, it was a given that the user could choose to use fast 3G data or rely only on EDGE. However, in the last major versions of the mobile operating system, this option completely disappeared, and the only way out was to turn off data completely. iOS 8.3 which it came out yesterday, fortunately, it finally solves this problem and returns the option to turn off fast data.

This setting can be found in Settings > Mobile data > Voice and data and you can choose between LTE, 3G and 2G here. Thanks to this setting, you can save both battery and mobile data. This is because the phone often consumes a lot of energy when searching for a fast mobile network, even in an area where fast data is not available. So if you usually move in an area where you know you won't get LTE at any cost, simply switching to 3G (or even 2G, but then again you can't use the internet much anymore) will save a significant percentage of your battery.

By switching to a slower 3G network, the user avoids this unpleasant thing. If you don't have iOS 8.3 yet, you can install it OTA directly from Settings > General > Software Update.

Source: CzechMac
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