The iPhone 4 is almost upon us, and all signs are that tomorrow’s launch day is set to be an interesting one.

We know that stocks will be limited – o2 are only selling to existing o2 customers, no-one’s been accepting pre-orders, and Carphone Warehouse are rumoured to be getting a relatively small amount of stock for tomorrow.

Those not mad enough to queue outside a store should be looking to set an alarm clock for 7am, when Vodafone will be accepting web orders for the iPhone 4, and not just for Vodafone customers.

Order online from 7am on Thursday the 24th at shop.vodafone.com/iphone – and good luck!

Any plans to get an iPhone 4 tomorrow? Let us know!

From the 24th of June 2010, o2 will be scrapping the unlimited data plan for new iPhone customers.

Existing iPhone customers on an unlimited data plan can keep that plan as long as they don’t change tariff, or upgrade to the new iPhone 4.

Anyone getting a new iPhone from 24th June will instead be offered a tariff with the following:

• Cap of 500MB of data a month – £25 to £35 a month contracts
• Cap of 750MB of data a month – £40 to £45 a month contracts
• Cap of 1GB of data a month – £60 or £65 a month contracts

Given that many iPhone users are heavy data users, this new cap will be far from ideal, and many may choose to either a) not upgrade to the new iPhone 4 and keep their existing Unlimited contract, or b) shift to a network that offers a less extreme data cap.

Although the new data caps take effect from 24th June, it seems o2 won’t be enforcing them until 1st October 2010. From 1st October 2010, it’ll be an extra £5 for each block of 500MB used.

Hacked off with o2′s new data policy? Add a comment below!

News of a top offer on mobile broadband dongles that’s running for the next few days.

We featured these in Show 38 and were happy to recommend the o2 dongle. Rather than topping up with Pay-and-surf credit, this lets you use a credit card to buy a day’s worth of surfing as you need it.

From today, 28th July, o2′s halved the price of their dongle – it’s now just £14.67 (until 4th August). Even if you’ve no immediate plans to use a mobile dongle – this price is a steal, so get one now ready for the day you need one.

Available from broadband.o2.co.uk/mobile

Woo-hoo! This has been a great week for those that like their phones shiny with a picture of an apple on.

Two days ago, the new version of operating system OS 3 came out offering cut-and-paste, MMS and a lot of under-the-hood tweaks.

Today, Friday the 19th of June 2009, the iPhone 3GS went on sale at o2 and Carphone Warehouse stores across the land.

The 3GS (the “S” standing for Speed) offers a faster processor, improved battery life, video recording, a uninspiring 3 Meg camera and a digital compass.

The new 32Gig variant is likely to be a popular choice, but boy it’s not cheap – £890. (Assuming £275 for the phone, and £35 a month for 18 months). Those with an iPhone 3G will have to buy out their old contract to upgrade – for many, £245 or more…

Queues at a local o2 store at 8:30am today

Still, you have to hand it to Apple, the iPhone is revolutionary, and for many, including our presenter Pete, this is the must have phone, and it’s still hard to fault (if not afford!)

More on the iPhone: UK iPhone details