How much is it to add a line with Sprint?
Prices as of October 2009 were $9.99 per line per month in addition to the basic minute package included in your existing or new mobile plan.Source:Sprint: Add a Line
How much does an iPhone 4S cost with Sprint?
You will need to contact the network provider Vodafone and ask them to unlock your handset. If you are still within a contract period they may charge for the reminder balance of the contract period...
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How much is a LG Viper 4G Lte cost with out the 2 year contract at sprint?
That phone cost $399 off of the contract.
If I switch my sprint number to another sprint phone how much will it cost me to transfer my number to another?
Just take your sim card out of the old phone and put it in the new