Select Network Mode.
Here, you can select only 3G, 2G, or automatic mode selecting 2G, 3G, 4G networks; leaving it on automatic mode may drain the battery faster as the device constantly switches and receives different bands.
Above, Mytour.vn has guided you on how to switch from 2G to 3G on HTC devices. Additionally, readers can explore other methods.
Changing Network Mode on iPhoneas previously instructed by us.
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