How to fix my Samsung S5 phone?

[AC Question]

How to fix my samsung s5 phone.

I keep getting a error message unfortunately, google play services has stopped.

 

[nahoku]

Re: How to fix my samsung s5 phone.

I keep getting a error message unfortunately, google play services has stopped.

There can be any number of reasons why this is happening. A search on this forum will bring up a ton of hits.
Depending on what is causing it, it's difficult to isolate because so many people use different apps. Some had this problem because of the facebook app, etc. Try searching on this forum for "google play services has stopped" and read what others have tried so see if it'll help you solve your problem.