Vodafone will send you a message back of the form,
"Thanks for donating with JustTextGiving by Vodafone."There are no mobile phone charges for this service. It is provided by a partnership between JustGiving and Vodafone, called JustTextGiving. The donation is deducted from your mobile account and will appear on your next statement.
You will also get a second message, similar to
"Thanks for your £5 donation to Epilepsy Bereaved. You can add 25% at no extra cost with Gift Aid, just click here https://giftaid.it/f/38958352"If you have phone with internet capability then you can click on the link and add Gift Aid.
Ideally we would split the donation 50/50 between Epilepsy Bereaved and the Epilepsy Society, but Just Giving does not support that facility at all. So all such donations do entirely to Epilepsy Bereaved.
I repeat, your donation will appear on your next mobile phone statement. This service is an alternative to PayPal SMS donations.