I do not understand how to be with phone numbers / SIM cards.
To confirm 100 account conditional social networks have 100 rooms. You can order a hundred virtual numbers in any service for receiving SMS, get a confirmation code and to use the social network, but after a while, the social network will request confirmation by phone number, which is, of course, this service will not. Then the account can be considered lost, and this is undesirable.
You can buy 100 SIM cards from the operator, to enter into 100 contracts to 100 SIM cards, but will cause terrible strained. You will have to insert the SIM card in the phone, enable it, disable, insert new card, so even 98 times. Also, you will need to monitor the balance, from time to time to make a chargeable action to suspend any period, the fees for unused rooms (about 3 months), and this will need 100 times to insert the SIM card and send SMS or call. It takes a lot of time, and straining hard. You can not bother and just top up the balance, but then in a month according to preliminary estimates will have to pay about 10K to room not because of the lack of pay action (about 3 rubles from the operator per day * 30 days * 100 rooms).
How do people manage such a large number of rooms? How can all this be simplified so that after a few months you could get on the assigned account number by SMS and not insert them into the phone to complete the pay action? Maybe there's some special terminal where you can stick a lot of SIM cards and on some display displays messages come to a specific number or connect it somehow to my computer? Surely there's something?