I have absolutely no signal when at home. We live in a fairly narrow valley and so expected this - none of the networks have a signal here. If we go up either side of the valley by a few hundred metres we get a signal.
On our EE account we have a "signal box" which provides us with a local 3G signal via our broadband.
Has giffgaff negotiated anything similar yet? I know O2 have a similar device - their "boost box".
Giffgaff seen to be lagging behind with this now as this technology (femtocell) is now widely used by EE, O2 and Vodafone for their domestic (not just business) customers.
I'm sure many giffgaff customers would benefit and would be prepared to purchase such a device if it were available.