can you tell the Phone case packaging size?

so the size of the packaging will need to hold cases and screen guards with maximum size of 6.5inch so a couple of mm bigger but not to sure yet from our packaging supplier

need to know exact sizes of packing before start the design.

As i said before i do not have the sizing as these phones have not been launched as yet. so at this point and time all we have is rumours of sizes. our packaging suppliers will not give us an exact size yet without their phone mould unfortunately.