Verizon today announced that its existing month-to-month customers can now move to the carrier’s More Everything plans beginning April 17.

Verizon is promising savings of $10 for plans with 8 GB and lower and $25 for plans with 10 GB or more. The carrier will also now allow customers to add phones they already own to a More Everything plan for either $15 or $30 per month, depending on the data allowance selected.

Verizon said this offer is good for a limited time but it doesn’t specify when the promotion will end.

Verizon introduced its More Everything plans in February. In some instances, the new plans double the amount of data available previously. Verizon updated More Everything to match AT&T’s current offer of four lines with 10 GB of data for $160.