You should definitely upgrade. 10.0 was never released to the public offficially because of issues. The earliest public build is 10.0.1. Only certain iPhone 7 came with 10.0 from the factory. Mine was one of them. There are many security updates that have been released since.
I'm getting phenomenal battery life out of 10.2.1. My 7 plus has been unplugged for 7 hours, and I've done some calls, e-mails, a few games, etc. and I'm down to 95%. It is crazy, crazy good now. Definitely upgrade!
I'm getting phenomenal battery life out of 10.2.1. My 7 plus has been unplugged for 7 hours, and I've done some calls, e-mails, a few games, etc. and I'm down to 95%. It is crazy, crazy good now. Definitely upgrade!
While mine is the exact opposite: battery goes from 100 to 91 in just half an hour without using anything. Mobile data is disabled even. Sometimes the battery percentage goes down one percent per second for a good while. Absolutely horrendous.