Hi nicholascwy,

If you had subscribe the "Monthly Upgrade Fee" option at the point of registration & already at 17th months installment out of 24 months as of now.
You may walk-in to any of our Maxis center to return your current phone to us & proceed to sign up another new device without any upfront payment or penalty charges

We will waive off the remaining 7 months zerolution installment for your current phone & the new device will be under another 24 months new zerolution contract.

Alternatively, if you didn't subscribe for the "Monthly Upgrade Fee" option or you would like to keep the current phone, you may also finish the 24 months installment for the current phone first & then proceed to sign up the phone device after this.

TQ