HI you can use the sim in both countries only if the phone in which you are going to use your sim is unlocked from network .Else if its locked to any network provider then unless you unlock it you cant's use your french sim in it .To unlock mobile phone visit Unlock-Free.com here they generate unlock code for some older mobile models at free of cost .

Hi unlocking is nothing but removing the network lock in your phone .Most phone come locked with network provider due to this they can't be used with other network unless you unlock it .There are many ways found to unlock phone they are by using cable,code ,software and so on .Among them code is the best .There are many vendors available online who render code to unlock mobile at affordable cost .If you want to unlock any older mobile models .Then visit Unlocking4free.com here they generate code to unlock mobile at free of cost.

Hi is your iphone 4 locked to network provider .Then visit Superunlockcodes.com here they unlock iphone using remote unlocking service .Before paying for the service check whether they are delivering service for your country and network provider to which your iphone 4 is locked at present.If available then pay for it and unlock your iphone 4.

Hi unlocking is nothing but removing the network lock in your phone .Most phone come locked with network provider due to this they can't be used with other network unless you unlock it .There are many ways found to unlock phone they are by using cable,code ,software and so on .Among them code is the best .There are many vendors available online who render code to unlock mobile at affordable cost .If you want to unlock any older mobile models .Then visit Unlock-Free.com here they generate code to unlock mobile at free of cost.

Hi is your Huawei U8110 mobile from network lock .Then visit Unlock-Zone.com here they render unlock code for all mobile models .Before getting the code from them check whether they are rendering code for your country and the network provider to which your mobile is locked .If yes then pay for it and unlock your mobile.