I have a few queries I would like you to help us with for our client. My client is a telecom company, they have their own in house data warehouse system, which has the ability to track users by their MSISDN (unque ID). Currently they are using Google Analytics Free version. Q1 - At registration the users will have to provide their phone numbers on the client's website, once that is done they will be treated as logged in users after the normal process of verification emails/sms's and logging in i...