AT&T launched its Next plans in July 2013 that require customers to sign an installment agreement to pay for smartphones in monthly installment payments. Payments can be made up to 30 months, amounts of which are determined by the full retail price of the handset.

Under the Next 24 plan, the retail price of the handset is divided in 30 equal installments. Next 18 requires 24 equal monthly installments and Next 12 comes with the option to pay for the mobile handset in 20 equal installments. Well-qualified customers will not have to make any up front payment if taking a handset under any of these plans.

Recently, AT&T also revealed the new Next 12 plan with down payment, where customers have to pay 30 percent of the device up front and the balance is divided in 28 monthly installments.

AT&T has a number of top-end smartphones to offer in the Next payment plans, and here is a list of some of the best smartphones offered under the plan.

LG G4

The LG G4 is one of the latest handsets on the smartphone market. The release date for the LG G4 on AT&T is June 5, and the carrier has started taking preorders for both the Metallic Gray and Leather Black colors of the handset. The retail price of the LG G4 is $629.99 and it is also available on the Next Plans.

The handset is available for $21 on Next 24, $26.25 on Next 18 and for $31.50 on Next 12.

Under the Next 12 with down payment, customers have to shed $189 as the up front cost and then $15.75 in 28 equal installments.

iPhone 6

AT&T is offering all the three colors of the iPhone 6, with all the storage capacities, under the Next plans.

The 16 GB version of the Apple phone is available for $21.67 under Next 24, $27.09 under Next 18 and $32.50 under Next 12. With Next 12 with down payment, a customer has to pay $195 up front and then $16.25 on a monthly basis. The full retail price of the iPhone 6 is $649.99.

The 64 GB model of the iPhone 6 has a full retail price of $749.99. Under the Next 24 plan, the iPhone 6 is available for $25, Next 18 for $31.25 and for $37.50 under Next 12. A customer can pay $225 up front and then $18.75 monthly to buy the iPhone 6 under Next 12 with down payment.

The most expensive iPhone 6, the 128 GB model, comes with a price tag of $849.99. However, a customer can get this version of the iPhone 6 for $28.34 on Next 24, $35.42 under Next 18 and $42.50 under Next 12 plan. If a customer has that extra cash, they can pay $255 up front and then $21.25 monthly on the Next 12 with down payment plan.

iPhone 6 Plus

The 16 GB, 64 GB and 128 GB models of the iPhone 6 Plus in all three colors are available in the AT&T Next plans. Each have full retail prices of $749.99, $849.99 and $949.99, respectively.

The 16 GB, 64 GB and 128 GB models are available for $25, $28.34 and $31.67 under Next 24, $31.25, $35.42 and $39.59 under Next 18 and for $37.50, $42.50 and $47.50 under the Next 12 plan.

The 16 GB, 64 GB and 128 GB models of iPhone 6 Plus can also be bought for a down payment of $225, $255 and $285 and monthly payments of $18.75, $21.25 and $23.75 under Next 12 with down payment scheme.

Samsung Galaxy S6 Edge

The 32 GB Samsung Galaxy S6 Edge has a retail price of $814.99. Under Next 24, the handset can be bought for $27.17, Next 18 for $33.96 and under Next 12 for $40.75. Next 12 with down payment requires customers to pay $245 up front and then $20.36 monthly.

The Galaxy S6 Edge 64 GB model is available for $914.99. Customers can buy the handset for $30.50 under Next 24, $38.13 under Next 18 and for $45.75 under Next 12. An up front payment of $275 and monthly installments of $22.86 are needed under the Next 12 with down payment plan.

The 128 GB Galaxy S6 Edge is currently one of the most expensive handsets available on the market and has a price tag of $1,014.99. Customers can buy the handset for monthly installments of $33.84, $42.30 and $50.75 on Next 24, Next 18 and Next 12.

Next 12 with down payment requires $305 to be paid up front and $25.36 monthly installments.  

Galaxy S5

The 16 GB model of Samsung Galaxy S5 is available for $569.99 without any contract.

The handset can be purchased for monthly payments of $19, $23.75 and $28.59 on Next 24, Next 18 and Next 12.

An up front payment of $171 and monthly installments of $14.25 are required for customers looking to buy the handset under the Next 12 with down payment plan.

Galaxy Note 4

AT&T is selling the 32 GB version of the Galaxy Note 4 for $845.99 without any contract.        

On Next 24, the handset is available for $28.20, $35.25 on Next 18 and $42.30 for Next 12. A down payment of $254 followed by monthly installments of $21.15 are needed if customers want to buy the Galaxy Note 4 under the Next 12 with down payment plan.  

HTC One M9

The 32 GB model of the HTC One M9 is available for $708.99 via AT&T.

Under Next 24, the handset can be bought for $23.64. Under Next 18 and Next 12, customers will have to pay $29.55 and $35.45.

The handset is also available for monthly installments of $17.72 and an up front payment of $213 under the Next 12 with down payment option.

HTC One M8

The HTC One M8, 32 GB variant, has a retail price tag of $689.99.

Monthly payments of $23, $28.75 and $35.50 are needed for Next 24, Next 18 and Next 12 plans.

An up front payment of $207 and monthly installments of $17.25 are required under Next 12 with down payment.  

Apart from the above, there are many other handsets on offer under the Next plans, including the Samsung Galaxy S6, iPhone 5s, LG G3 and more.

Photo: Mike Mozart | Flickr