October
October
You should be able to get a new phone anytime but it's worth noting that a current in-market plan will need to be chosen along with it. Another option is always to get a device straight from the manufacturer if you want to keep your existing plan!
October
Because you are on a BYOD plan your device and plan are not tied together. You own your device and have 100% control of what you do with it. You can buy a new phone outright (not on a plan) from anyone and just swap the SIM.