I used to receive prompt and complete notification each time my credit card was used. In recent months this has become an unreliable service. On calling Tesco Bank I get told to reinstall the app ( done more than once) or that my phone - a Samsung - is faulty. I reset my phone and I have tried the app on my iPad and it works erratically. Tesco seem unable to help with this issue. After many years with Tesco bank I think it's time to change credit cards.