1. according to your website I am too stupid to enter my own phone number.
2. according to your website the international dialing code for belgium is +47 whilest in real life this is +32. if you offer a country selection, make sure your sh*t uses it as well.
3. according to your website mobile phone numbers are illegal formatted. WHY WOULD I BE SO STUPID THAT I CANNOT WRITE MY OWN PHONE NUMBER CORRECTLY. Either your check fails for the right reasons or f#ck your check since it does not work properly.
hint: Google has a library for this called 'libphonenumber'. It has a as you type validator function!!!!!!
4. why do you even need my phone number. It's not that you're ever going to call me anyway. Why would you even contact customers by phone??? all you ever care about is your billing and this stupid forum.