I recently updated my iOS software to 11.3.1.. I wish I hadn't! My battery seems to be draining quickly now. I would normally rave about the battery in this phone, could go all day and still be at 50%. Nope, now I'm seeing 50% around mid-day. I have seen a couple other posts on here where others are experiencing the same issue. This is a first where it was this noticeable for me. So I am here inquiring about if it is possible for me to back out of this update after the fact? Can I go back to what I had? May be a stupid question, but I had to ask.. Thanks in advance!