I had a Lg Stylo 2Plus from T-Mobile,it was very slow, lagging, then the UI stopped and the LG Server stopped, couldn't use anything but phone dialer, I called T-Mobile, told me to backup important information to sd card or google drive and do a factory reset, if still having issues, see if phone has a warranty still left, exchange phone, I did that and a day later, the phone was having the same problem, I research lg phones and heard. The lg g3, g4, g5 and lg v10 had alot of complaints and some with the Lg Stylo 2 plus, server and UI issues, so I went to the store and told them my problem with my phone, checked on a upgrade, I was on T-Mobile jump plan, I could upgrade my phone by giving my junk phone for a different brand, they had a sale for the Samsung S7 edge, $200 of full price, so I got the phone and been using it since April 1St, 2017 and what a much better, stronger, phone, and more memory 4g memory with 32gb of storage, crystal clear 12 megs pixel camera, remember a lagging phone needs to be reset, backup first, if still having trouble, check if it has warranty left, if so, do it, if not get another phone , that's what I think is best!