My wife's iPhone needed its battery replaced (surprise, surprise!), and we didn't want to wait a few weeks for Apple's mail-in solution, so I found Altair Electronics (an Authorized Service Provider for Apple products) on Google. I highly recommend them!
Most importantly for a service provider like this, the people at Altair Electronics are highly knowledgeable.
On Monday this week, I originally spoke over the phone with Len, who clearly explained what would need to happen in order to resurrect the phone. He gave me a straight-forward quote and suggested that I drop off the phone this morning (Wednesday).
For the kind of surgery that the phone required in this case, it was necessary for us to disable the FindMyiPhone feature. However, I had been unable to do that, because we couldn't even turn it on. Nevertheless, when I walked in this morning Len was able to help me make it happen, with no problem at all.
When I described in further detail the problems we were having with the phone (that it wouldn't even charge anymore), he mentioned a couple of possible reasons for those problems, beyond just the battery. Our initial intention when we spoke over the phone was simply to replace the battery, and so Len assured me that if the problem was something further than that, he would certainly call me first. Sure enough, a simple battery-swap fixed everything.
Less than 3 hours later, the phone was ready to go, and as good as new! Their prices were more than fair (and exactly as originally quoted), and their service was second-to-none.
And in case it isn't clear yet, I also found Len to be very friendly and professional. Altair Electronics is now my go-to place when my electronics need some TLC!