paul g wrote:RE: Vodafone,
You still can't send an SMS/text from a Greek Vodafone mobile to a UK 02 mobile, just saying.
sorry meant O2.
I've just done some experiments with Scooby, who is now back in the UK, who used to run a mobile phone business and who has both an O2 and an EE mobile. Text to O2 from a Greek Vodafone handset didn't get through. One to EE from the same Greek Vodafone handset did.
It is worth checking that you have the correct message centre number set on your handset. For Vodafone Greece it is +306942190000. When you send a message it goes to the Vodafone message centre number first. From there Vodafone send it on to the O2 message centre number and from there O2 send it to the O2 handset. On my phone, a Samsung, you find it by tapping on messages, then the 3 little dots at top right, then on settings, then on more settings and then on text messages. The message centre number is at the bottom of the list. It may be different on other makes of phone. It will probably be correct or you wouldn't be able to send texts to any operator.
Either the problem is at the O2 end or a problem between Vodafone Greece and O2. Probably each will blame the other.
One way round the problem, if you and your contacts all have smart phones, is to use WhatsApp. That has a text messaging service that works just like SMS but it does it through the Internet. If you are connecting to the Internet with WiFi, either your own or at a free hotspot, then it is free. Scooby and I were communicating with text through WhatsApp in parallel with sending test texts with SMS so it definitely gets through to an O2 phone through WhatsApp.