Further to an early post whereby my iPhone 2G had issues connecting to wi-fi networks after a firmware update, a similar thing happened to my iPhone 3G last week for no apparent reason.

My iPhone 3G wouldn’t connect to my Time Capsule wi-fi. I rebooted the Time Capsule and the iPhone but it still gave an error. I then tried with my 2nd home wi-fi network (Netgear DG834GT) and the same “unable to join the network” error message popped up. In case it was an issue with channel interference or WEP password mistakes I switched channels and turned all security off temporarily. This still didn’t solve anything, my MBook Pro, Air, Apple TV, Xbox etc could still connect perfectly as did my old iPhone 2G. I backed up my iPhone and then carried out a full restore but even the virginal factory fresh restored software refused to connect. Once a friend with another 3G came round and connected without a problem I had little choice but to book an appointment at Apple’s Genius bar.

The Genius tried to connect to the stores wi-fi and it failed, he checked the phone had the latest version, did a force reboot (I’d already done several) and then simply said “I’ll go and get you a new one”.

After checking for liquid damage using an otoscope to view the liquid damage indicators in the headphone socket and bottom port he gave me a new iPhone 3G and I was on my way.

Since I use MobileMe & Exchange PUSH, when I set up the accounts quickly on store on the new iPhone my contacts were pulled down onto the iPhone in under a minute which is useful since my iPhone backup was on my home machine a few hours away.

I picked my iPhone on launch day in the UK (November 9th) and after making a few calls several friends complained of a “creaking” sound coming down the phone.

I eventually narrowed the sound down to the plastic housing for the speaker and microphone, applying gently pressure to the sides of the housing when holding the phone caused the plastic to flex and creak. As the microphone is housed in this area the small sound was greatly amplified down the line to my friends.

I took a trip back to the Carphone Warehouse the next morning, explained and demonstrated the problem and they instantly agreed it was a fault and would issue a replacement. The problem was none of the sales staff were able to talk me through the exchange procedure for the iPhone as I was the first to return a faulty iPhone. They seemed to be under the impression when I connected the replacement iPhone to iTunes I would have to start a new 18 months contract and ask for a refund and termination of the previous contract. This seemed ludicrous to me so after an hour wait in store whilst they called somebody for advice they finally gave me a new iPhone but removed the SIM from my old faulty phone and installed it in the new one.

That was it as far as they were concerned, it should just work! WTF of course it won’t, I powered it on in front of them to prove my point, and sure enough the phone was in Emergency Call only mode until I connected to iTunes.

Somebody then reassured me that iTunes would recognise the phone as a replacement and I’d simply have to enter my old number to migrate my account to the newer handset. This brought up a new problem, since I was migrating from Vodafone to O2 and was porting my number, I had been issued with a temporary O2 phone number for 7 days. Did I enter this temporary O2 number or my number being ported across if iTunes asked?….blank faces from all the staff again!

I left the store and decided to just try it and see what happened, and for the benefit of anybody else wandering how the replacement iPhone process differs from the new sign up procedure I took screen shots at each stage:

Step 1: First Screen shown when replacement iPhone connected.

Step 2: iTunes knows an iPhone is already registered to my account and asks for my existing mobile number. At this stage I decide to enter the temporary mobile number that I’ve been assigned until my number ports from my old network.

Step 3: It then asks me to confirm my Apple ID and password.

Step 4: A brief wait while it checks my Apple ID against the mobile number given.

Step 5: I am then asked to review the Bill name and change to mobile number. I notice that it’s defaulted to the 9991231234 phone number for some reason but I go with it and see what happens.

Step 6: I’m presented with an error saying the iTunes store may be busy!

Step 7: I’m then present with the same review your O2 account information page but this time it’s picked up my O2 username and external email address I signed up to O2 with along with the temporary phone number I previously entered.

Step 8: Another short wait while it processes my activation. You’ll notice that it didn’t ask me to agree to any T&C’s again, nor did it ask me to verify my tariff.

Step 9: Activation complete it now asks if I wish to restore a backup taken from my previously faulty iPhone.

Step 10: I chose the most recent backup and hit continue and it takes a few seconds to restore the backup. (note I didn’t have any music or photos in the backup simply contacts, calendar and email settings)

Step 11: All done. The replacement phone is now connected to my iTunes and O2 accounts, the old phone contents have been restored on the new iPhone and I’m all set to go.