Device Help Samsung GALAXY S4
Samsung GALAXY S4

Samsung GALAXY S4

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Popular guides

Setting an alarm on my mobile phone

Making a video call with my mobile phone

Turning GPS on my mobile phone on or off

Choosing network mode for my mobile phone

Unblocking your SIM

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Getting started

Basic functions

Calls and voicemail

Messaging

Apps and media

Connectivity

Video guides

Issue: Slow WiFi on Android Issue: Slow Mobile Internet on Android Issue: Can't Use Mobile Data with Android Issue: Can't Connect to WiFi with Android Issue: Can't Make or Receive Calls with Android

Media guides

Clean up and Speed up your Smartphone Can't make or receive calls from your Smartphone? Can't use mobile data on your Smartphone? Can't connect to WiFi on your Smartphone? Slow mobile internet on your Smartphone? Slow WiFi connection on your Smartphone? Keeping your Smartphone Safe