Thanks for your post. It gives me more confidence.
I didn't realise it was LLU. I just hope it works out OK.
Still not sure about the mobile phone. I looked at O2 web site. Can't make out which PAYG Sim card do I have to get.
Just want the minimum to qualify for the broadband discount.
Just wondered if I have to get the mobile before I sign up .
Or can I get it after signing up for the broadband but before the two months free time is up - when I actually start paying for the third month.
Thanks again.
JM
Confidence is the key! It's a bit like swimming - the water can seem very cold until you dive in. But then the fun starts. You really will be amazed once you are away from ADSL Max and even Plusnet.
The web site is a mess in my opinion so not surprising you are confused. Also it seems to change every few weeks

.
Get a free SIM
here. I advise getting that immediately as even that can become hard to find as the site changes. They are valid (to register) for a couple of years or so, I've even got a spare that I think is still able to be used.
You can sit on that until a few days before a billing date approaches. Which because of the free two months will be Month 3 of your contract.
The top up has to be at least 3 days before the billing date. So I would do it a week or even more early to make sure everything goes smoothly. It isn't that critical, as you will see later in this post.
You do not need an O2 mobile to sign up, but you must have (access to) an active mobile as all delivery and activation information is sent by text message.
When you do activate the SIM, afterwards you ring support and ask them to associate the number with your broadband account. You can then, via your control panel, also alter the text message contact number to it, or leave that on your existing mobile. There are two separate number fields that don't need to be the same.
Once the SIM is up and running you go to
this page or wherever the equivalent is by then

. I chose Favourite Place, as you probably read in my migration link.
Looking at all that and also the alternatives, it looks as though you have to top up every month.
You don't!
What happens is you top up in Month 1 of the three. You get the benefits you have chosen for that month. For the next two months you do not get those benefits but the £10 credit is valid at standard call charge rates. Also on Favourite Place, during Month 1 away from the post code area chosen. In other words, a bog standard mobile PAYG.
Month 4 you top up any time up to 3 days before the broadband billing date and get the broadband discount on the next 3 bills. So this is where you can slip a few days if you wish from the first one discussed earlier. The top-ups don't have (in themselves) to be within exactly 3 months of each other.
If for any reason you fail to top up in any "Month 4" all that happens is you lose the BB discount that month. Topping up 3 days before the Month 5 billing date regains discount for the next 3 months, ie instead of Month 4 becoming the new Month 1, Month 5 becomes the new Month 1.
More arithmetic. If you miss a top up you lose £4.87 discount. But you save £3.33 top up. So the penalty for a missed topup is only £1.54.
Similarly to relevant bits above, if you didn't have an O2 mobile even after your real billing starts,at any time in the future you can get one and have it associated with the account.
Furthermore - the associated O2 mobile doesn't even have to be in your name or at your address! But any particular O2 mobile can only be associated with one O2 broadband account. So the owner cannot also get the discount. However you can't just use any O2 number you know - at association time they send a text message to it with an authorisation code and you have to enter that on your account. Thus proving you have permission/access to use that number.
Edited by RobertoS (Thu 23-Jul-09 00:57:46)