I am a newby and need some advice. After much research, I have decided to buy a unlocked LG Optimus One and will be using my current capped mobile plan which I am happy with. However this provider's tethering charges are so exorbitant that I would like to purchase a cheap data pack SIM (eg Amaysim $9.90 for 1GB) so that I can tether the phone to my netbook to use on a casual basis when I am away from home. My question is: Are there any problems with interchanging the SIM cards? Would this interfere with the phone settings? Would they have to be re-set every time I swapped cards or would the phone recognise each SIM card when inserted and automatically use the correct settings?