Just change my mobile phone from Nokia 5610XM to a new pda window mobile phone. Actually, I thought I will upgrade my phone to 5800XM but in a special reason influenced me to bought a Motorola A3100 at last Thursday. It was amazing with it's function with GPS, Wifi and Interface like Iphone... Normally, Window Mobile will have some delay as my friends told me but it was not a problem for A3100. It can run multiple applications without any delay. It is a 2009 new phone from Motorola. ^^