Blu Life XL LTE 16GB phone power & wifi problems.

[lisa1230]

I have a Blu Life XL LTE 16GB android 5.1.1 phone. It was working fine but yesterday and today It shut off multiple times and then I couldn't start it without removing the battery and putting it back in. It also has problems with connecting and keeps disconnecting to wifi when I'm outside and there is nothing wrong with the wifi service because my nokia phone at the same time and place has no problems with wifi. Any ideas? Thanks