Calling/Sending message to a Ukrianian mobile from UK mobile

[DaveB1]

My girlfiend sent me her mobile phone number so we can text and call each other. She is located in Ukraine and the number she sent was +380 93 xxx xx xx.  I tried calling and sending message but both failed.  Am I doing something wrong?

[Bambino]

@DaveB1 Not sure why you can't call or text, but aside from that you should both download and install WhatsApp. You can call, text, and video call over WiFi for free. You can do the same with Facebook Messenger or Google Duo, and there are probably others too. Don't waste your money using your O2 allowances.

[MI5 · Accepted solution]

@DaveB1 

If you have a spend cap any international calls or texts may be prevented.

Guide: Spend Caps & Charge to Mobile on O2 

If you message O2 on Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG) , they should be able to help you with this.
Thanks.

[DaveB1]

Thank you.  Don't know why I did not think about WhatsApp. Great advice thanks.

[DaveB1]

MI5 thanks for that.