Sim & billing

[Emmakc]

Hi anyone know why I've been sent 2 SIM cards? I took a phone contract out last week it came with 2 SIM cards I activated one and all good I do have another sim & my son wants to use it I have activated the 2nd sim in another phone and using it but I don't know how much it will be or how much i will end up paying. They both have different mobile numbers too I also have the app and I can manage it all on there I can see what's being used and how much data I have left etc but for the 2nd sim my son is using it's not telling me how much it is or how much I will end up paying it's not giving me a monthly price yet? I can see from my app I have it on £5 for 100mb of data it also says it has unlimited calls and texts. Is this ok to leave this or will it go high in price or what am I actually paying if anyone knows please much appreciated 

[caesarome]

100mb of data really isn't much at all so that chances are you son will soon use that up.

Have you looked at the future bills section as it might not show on your current one if you have only just activated it.

[PandJ2020]

Sky were supplying 'cheap' additional SIMs (I thought they were less than £5) - primarily to use data stored in the piggybank as opposed to the supplied amount.  As noted, 100MB can be used up in minutes.