I bought 3 identical Samsung 3g moible last year.
One of the phones will not hold charge; so sent it March/April 2008 through retailer as it was under warranty.
Mobilefone repair sent back after a few weeks. Says could not determine a fault after testing.
Same problem on receipt of phone. Swap batteries around the 3 identical phones. The faulty phone drains each battery with 2 days on being swiitched on and left aside without any calls made or received. The batteries would easily last 6 days on the other 2 phones.
Sent back via retailer. Came back after a couple weeks. Same diagnosis!! On receipt of phone, fully charged it and left it aside. Battery went flat in 25 hours!!! Swapped batteries with identical phone - same result.
Called Samsung NZ - very professional and friendly. Advised phone to be sent in the third time. If still not resolved, to have phone (with the log sheets from mobilefone repair) sent in to Vodafone who will forward it to Australia. Also found out from that retailers MUST refund your bond held on collection of phone from retailer.
Just about to send phone in 3rd time to mobilefone repair. (Sigh - What a waste of time and effort so far).
As far as the service of mobilefone repair is concerned, it is very disappointing indeed.