I recently upgraded the OS to 7.1.0.284 on my TMo 9900 and now have WiFi calling and reception, but I find I can't be further away than 20 or so feet from the router before the warning signal goes off that the signal is too weak and I'm about to lose the call. I have a new-ish Linksys wireless N gigabit router and it worked fine with my 9700 on UMA - I had strong reception at least 120 feet away or more. What's the opinion here - does the 9900 just have a poor wifi receiver (if that's what it's called?). I've tried 'tuning' my settings, but it's just not that strong - I have to practically sit on the router for it to work. humm.
