Since the advent of 4G , operators have changed their profile to indicate that 4G network is being used. The 3G cellular network offers a high speed internet connection, albeit slightly slower than 4G. In return for providing this additional connectivity, smartphones consume a lot of energy. In some situations you might want or need to disable your 4G and 3G connections on your iPhone to prolong battery life. We'll take you through the simple steps in this article.
Disable 3G or 4G on your iPhone
Go to Settings > Mobile Data.
Next, click on Mobile Data Options:
Then Voice & Data:
If your phone is connected to a network operator offering 4G , you will see a 4G option.
Even if you disable the 4G network, 3G remains active. If you then want to disable 3G too , turn off Cellular Data.
If your phone offers 3G, turn off the Enable 3G option.
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