Hi All,
Wanted to chime in with my experience so far. I am also experience freezing and lag, but when this happens my phone rapidly disconnects and re-connects to my known WiFi networks.
I am coming from a Verizon 6+ to the a new Verizon 6s+. I backed up the 6+ and restored the 6s+ from backup. After restoring the 6s+, I instantly noticed lag and freezing. What I mean by this, is that when entering a password, i could type 2-3 characters before the phone would become unresponsive. After a 12-15 second delay, the phone would let me again type 2-3 characters before locking up again. At first I figured, it was because it was indexing, I left the phone on my desk to "let it do its thing." However, when I came back, the same issue was occurring.
After further inspection, I noticed that my phone was rapidly dropping and reconnecting to my home WiFi. I turned off WiFi and the phone began to function like normal or as expected. I turned WiFi back on and had no further issues. That was until I powered my phone off and back on (unrelated to this) and the same thing started happening again.
I have reset my network settings.
Called Apple and did a full system restore then restored via backup.
Exchanged the phone for the same model.
Reset network settings again.
The issue is still persistent and consistent. It seems to happen anytime I connect to WiFi from LTE (home to work and vice versa).
Anybody here experiencing the same type of situation?
Edit: Running iOS 9.0.2