Hello @Jean371 ,
Welcome to the community,
You can do this via your account either via the website or via the My EE App when logged in.
As you are going abroad, are you wanting to use your phone abroad? If that is the case and you are on contract, please make sure that you have roaming on your account enabled.
You may want to check here too:
https://ee.co.uk/help/mobile/roaming/roaming-costs
You may want to take a look here about spend cap:
https://ee.co.uk/help/mobile/manage-use/pay-monthly/set-up-and-manage-spend-cap
To contact EE customer service dial 150 from your mobile phone or ring customer service for free using Skype or another phone: +44 800 079 8586 or +44 800 956 6000.
