The four lines for $100 offer is available only at Boost dealers, not online. All lines must be new activations and at least one must be a number that is ported in from a non-Sprint based operator and has not been on Boost in the last 90 days. Customers who port a numbers to Boost are also eligible for a free Android phone for each line ported. Available free phones include the Samsung Galaxy J3 Emerge and LG X Power. Porting customers also get discounted prices on other phones. including a $49.99 iPhone 5s 16 GB, $129.99 iPhone SE 16 GB, $249.99 iPhone 6 16 GB or $399.99 Samsung Galaxy S7.
This four lines of unlimited data for $100 offer is Boost's answer to multi line plans from T-Mobile's MetroPCS and AT&T's Cricket. Compared with Cricket and MetroPCS, Boost's deal includes more high speed data for the money but has more restrictions. Cricket's regular, non-promotional family plan provides four or five lines with 3 GB of high speed data each for $100. MetroPCS is currently running promotion on their $50/month unlimited high speed data plan where 2 lines are $80, 3 lines $120, 4 lines $160, and 5 lines are $200. Unlike Boost's 4 lines for $100, the MetroPCS and Cricket Family offers are available to both new and existing customers with no port-in required.
See our Prepaid Family Plans Compared post for more multi-line deals.