The iPhone 5S phone keeps crashing, WeChat and text messages cannot be sent, the storage space is full, and the sound is not heard when making calls. What is going on?

Obviously there are faults in several major functions of the mobile phone:

Software crash: You can use the computer to download the Love Death Assistant to fix the crash;

WeChat and SMS Unable to send: You can try all the settings in Settings - General - Restore - If it doesn't work, refresh the phone;

The storage space is full; Go to Settings - General - Usage and delete some unnecessary settings. Just clear the cache of the software, photos and software;

Can't hear the sound on the phone: signal problem, find a place with good trust to answer the call, if it still doesn't work, the receiver may be broken, just send it for repair. Can.