Vodafone

Mobile firm Three is adding to its list of countries you can use your phone in without paying roaming charges from 15 June. But you'll still face a limit on the amount of your UK data allowance you can use abroad and fees for exceeding that limit – despite the much-touted 'ban' on EU roaming charges coming in next month.

Vodafone pay-monthly customers who are outside the minimum term of their contract in June will be slapped with an annual price increase of up to £42 - but you can dodge the hike without paying a penny.

A man hit with a shock £10,500 bill for exceeding his dongle's data allowance has won a partial reprieve from the Ombudsman after MoneySavingExpert.com highlighted his case.

A Vodafone customer has told how he racked up an astonishing £10,500 bill after exceeding the data allowance on his Wi-Fi dongle, which he mistakenly thought had been capped. If you use broadband on the go, beware – some Vodafone dongle customers don't have any caps on their usage in the UK, even though all providers cap dongle usage abroad.

Vodafone is once again the most complained-about mobile network according to data compiled by telecoms regulator Ofcom, with the firm getting three times the average industry-wide number of customer gripes.

Every Vodafone customer should check their bill for errors after it was fined £4.6 million by telecoms regulator Ofcom for "serious and unacceptable" pay-as-you-go and complaints failings. But this is just the tip of the iceberg – a MoneySavingExpert.com investigation in June revealed 1,000s have been wrongly billed due to a multitude of other problems.

About 15,000 UK customers who pre-ordered the new Samsung Galaxy Note 7 have been urged to return the phones immediately after a fire risk was identified with them. While the Royal Mail won't collect recalled faulty phones for safety reasons, some network providers will send couriers to pick up the devices and most will accept returns in store.

All the major mobile phone networks have abolished unlocking charges for pay monthly customers who are outside their minimum contract term, after intervention from the Government.

Apple aficionados who pre-ordered a new iPhone 7 for today's launch from EE, O2, Three and Vodafone have been left fuming after being told they'll have to wait to get their hands on it - in some cases, for at least six weeks . However, you may be able to cancel your order and claim a refund if it's late.

Apple has launched a new payment system which allows you to spread the cost of a new iPhone 7 over 20 months in instalments – without paying a penny in interest.