Now, if you lease an iPhone 8 or iPhone 8+ on Sprint, they will let you lease the second iPhone 8 free. It costs $25/month to lease the iPhone 8 64GB and $29.17/month to lease the iPhone 8 Plus 64 GB. The second iPhone 8 is free after a $25/month credit. If you prefer an iPhone 8+ or iPhone X for the second phone, they will still give you a $450 credits. To qualify for the offer, you must add at least 2 new lines. If you already have an existing phone, you can upgrade it to better iPhone and buy another new phone from Sprint to meet the 2 new lines requirements.