What are the disadvantages of eSIM?

eSIMs require your to have a charged phone. You may also need newer models of certain phones to be able to use an eSIM. While you may have a newer phone model, it is important to check whether you have a 'locked' or 'un-locked' phone. If you buy your phone from a carrier, there is a chance that your carrier have locked your phone. Make sure to double check with them to see whether or not you can use our eSIM for Japan.