Originally Posted by
König
I am just wondering if it's possible to top up with a voucher online. If the voucher can only be redeemed by dialing a number from the phone, then it wouldn't be possible to top it up from abroad unless you already have some funds for roaming calls. It's probably not a big deal since you can do it right after landing in EU, but still...
Good question. Maybe needs WiFi? Or the sim will allow a bit of data for this purpose?