I had a wince device before the iPhone existed 2005 ish.. An o2 XDA 2s ... There was flash for the OS ... All your files were stored in ram... Internet was a 56k dialup speeds... The arm CPU was anemic.... Wince also had issues if left on too long.. I.e. phone stopped giving audio in a call ... All in all was cool, the slidenout keyboard I miss but terrible software ... The lack of durable user files made it a fail.