I have disabled playmaket auto-updates. I wonder is there a way to get rid of nagging "Upgrade Required" screen? Hangouts show it on the every launch. I have tried block this app from internet access - no luck.
It does require internet for initial login. After that even with LightingWall(xposed module) or Flight profile 'Upgrade now' persist forever. May be some settings can be altered directly? Or apk may be hacked somehow?
I still can launch app indirect although; it is registered as SMS app so I can launch Hangouts SMS threads from say drupe.
UPDATE: Upgrading Hangouts to latest version and using XHangounts does not return proper merging of SMS.