I'm currently on Unlimited Fibre 1 and was wondering if there was a way to accurately predict Unlimited Fibre 2 speeds prior to requesting upgrading? Eg, entering my phone no and post code into Zen's site comes up with:-
40.0/10.0 (typical download speed)
36.0-40.0 (typical download range)
54.0/13.9 (typical download speed)
48.0-75.6 (typical download range)
...suggesting that I'd only get a +35% speed boost (40Mbps to 54Mbps typical download speed increase). However when logging into my Fritzbox 7530 router, the DSL stats information page states:-
Current Throughput : 39998 / 9999
Attainable throughput : 73859 / 20743
...which to me suggests that the router is likely able to get the max 74Mbps (+84% speed boost) and is currently capped at 40Mbps purely due to package choice? (Is that what that means)? When there's such a disparity between Zen's prediction vs router's "Attainable throughput" measurements, which in your experience is the more accurate prediction if upgrading?
Also, can you upgrade from Unlimited 1 Fibre (12-months) to Unlimited 2 Fibre (12-months) whilst still within the first 12 months contract, or do you have to wait until the 12 months has elapsed?