Thanks, but are you sure that those daily/monthly data packs from 3 are available to the regular voice SIMs?
For the regular PAYG voice SIMs I could only find
these add-ons, that include a 500MB-pack for £5 and a 120MB-pack for £0.50.
All the larger packs (1GB, 3GB etc.) are only advertised in conjunction with the
"Mobile Broadband PAYG" plans.
The point is, that my friends would like to place and receive some local calls and I wonder if voice calling is available on those "Mobile Broadband" SIMs and if calling rates are identical with the regular voice SIMs.