Sometime mid-morning yesterday, my iPhone suddenly displayed "No Service" instead of Globe's name. I wasn't immediately concerned, thinking this was a network issue. However, when the problem persisted well into the afternoon, and after finding out that other Globe subscribers weren't experiencing any network problems, I started to worry. I already tried the following: 1. Shut down and restart. 2. Eject and reinsert sim card. 3. Reset network settings. 4. Reset all settings. Thinking there was a problem with the sim card, I borrowed an officemate's Globe sim card and put it in my iPhone. The iPhone did not recognize the sim card - it displayed "No sim". Worse, when my officemate reinsterted her sim card on her phone, the phone displayed a "insert sim" message. The sim was eventually recognized after she restarted her phone several times. The only thing I haven't done is restore settings via iTunes because the internet connection in the hotel where I'm staying right now is crappy. Any ideas in solving this problem? Note: This is a locked/non-jailbroken iPhone with iPhone OS 3.1.2.