The Honor 8 Pro impresses with its excellent hardware. Besides 6GB RAM also a battery with 4000 mAh belongs to the repertoire of the smartphone. If that convinces and you would like to receive the smartphone for example by a contract prolongation, then you should check whether the currently used SIM card is still usable.
Since there are currently three different Sim card types on the market, it can be that your card does not fit.
Check to see if you have a Nano sim card. Because this Sim card format is used in the Honor 8 Pro.
If you are still using an older Sim card format in your current device, you now have a number of ways to get a Nano Sim card:
Option 1: Sim card cutter
There are so-called "sim card punches". A sim card punch, similar to a puncher, cuts the right format from your sim card when that is bigger. This works with small stencils and within minutes. Such sim card punches are already available for little money here: "Good Sim card punching" LINK
Option 2: Order from mobile carrier
You can always order a new Sim card in from your mobile operator. This takes between 3-5 business days and varies according to the provider (Between 0 $ -25$).
Option 3: Crop (Not recommended)
You can also cut your Sim card of course. You can download a Nano sim card template from the internet. We don´t recommend this variant since you can very easily mess it up and the card then does not fit in the Sim card Slot of the Honor 8 Pro.
You now have a variety of ways to get the right sim card for the new Honor 8 Pro. We wish you a lot of fun with the smartphone!