Originally Posted by PhxDroid86
I have the same issue with my stock 4.3 Note 2... not sure what happen during the OTA but im led to assume that with all the newer LTE phones, note 2 users arent the only phones accessing those bands, and something was shifted that creates more instability with wifi calling. I say more instability, as even when I was on 4.1.1/4.1.2 there would be times when friends/family would call/message me when I was connected to certain wifi's (at my girlfriends/etc) and the call would never come through, the messages would receive until I disconneced from the wifi. Even when leaving a voicemail, it was hit or miss for me to get those until I disconnected from wifi.
Not sure if it is a compatibility issue from being connected to edge vs lte vs etc (like you have narrowed down) as it may be a wifi router issue, or just initial bugs with wifi calling in general, considering wifi calling is still (in my mind) in its infancy stage
Sent from my SGH-T889 using xda app-developers app
I wouldn't necessarily say WiFi calling is in its infancy. I've been with T-Mobile since before the first android. We had Wi-Fi calling with the 2nd android phone T-Mobile had, the cliq 1. Every phone we have had has had Wi-Fi calling since. The first hiccup we ever had was with the HTC one s. With the note 2 we haven't had a problem until the update. Being an IT tech, I couldn't help but do my own ts, since it was happening to my s3 as well. What we found was it only happens if she makes a call on 4g or LTE going to a phone that has Wi-Fi calling turned on. If that person turns it off and goes to where they actually has signal, the call goes thru fine. My s3 was doing the same, but it is rooted.
We have put several calls into T-Mobile IT dept. That has stumped them badly. They have no idea why this is happening.
On my phone, I finally had the bright idea to reflash just the modem. It worked. No more issues on mine.
I can't root hers(she won't let me), and I know that will fix it by flashing the modem only.
So, sorry for long post, but that is where I'm at. I'm stumped, unless maybe just using Odin to flash the update all over again (like that will happen, she don't like it when I play with her phone).
Sent from my SGH-T999 using XDA Premium 4 mobile app
NOTE 3 TRICKEDOUT
TWEAKED AND BLACK AND WHITE
TRICKED OUT S3
DocHoliday77 4.3 TW DEODEXED
RUNNING 4.4 APPS
AND INVERTED MESSAGING
(GAVE TO DAUGHTER)