Mobiles - frequently asked questions......
How do I change my SIM card PIN Number?
This is a security measure that will force you to enter a unique PIN number every time you switch on the phone. If you lose the phone (when it is switched off!) no one else will be able to make calls on your account. We strongly recommend you do this.
This is executed on the handset. Different handsets operate in slightly different ways so please refer to your handset manual for precise instructions. If you are asked for a PIN code the default is shown on your welcome letter. Please remember you will need to activate the PIN code request to take advantage of this feature.
What is my Security Code?
This can be found in your handset user manual
How do I make calls whilst abroad?
When calling back to the UK whilst abroad, simply replace the first 0 of the number you are calling with +44
If you are calling a number within the same country as yourself, simply dial the number as normal.
REMEMBER IF YOU STORE PHONE NUMBERS IN YOUR HANDSET USING THE '+' SIGN AND COUNTRY CODE FORMAT, YOU WILL GET THROUGH TO THOSE NUMBERS WHEN DIALLING FROM THE MEMORY WHETHER YOU ARE IN THE UK OR ABROAD.
What do I do if I have lost/had my phone stolen?
In Opening hours (8.30am -5.30pm)
Call our team at ADSI on 01268 495555 to order replacement SIM and/or New Handset
Out Of Hours (5.30pm - 8.30am)
Call the appropriate network to place a temporary bar on your SIM
Then, In hours - Call ADSI to arrange a new SIM/ Phone
What do I do if I broke my phone?
In opening hours call our team at ADSI on 01268 495555 or click HERE to process Repair Page
How do I transfer my phonebook?
Click on the relevant link for the correct procedure
Network Specific Support Pages;
Testimonials
'ADSI have provided Astrum with an outstanding service over the past year and more. My Account Manager is always helpful and available to take calls and solve any issues we have with O2. Astrum have a number of company mobile users with a high proportion who work abroad for lengths at a time which can result in high usage of calls and texts and often problems with network connections. The team at ADSI are always on hand to work through these difficulties.
I would recommend ADSI to any of my customers when looking for great service and competitive prices."
Joanne Payne, Assistant Procurement Manager, Astrum UK
’we have been with ADSI for just over a year. Most people’s experience on switching any sort of service provider is that they are promised the earth; get good service at the start and this falls away. But with ADSI we received and continue to receive a personal and efficient service which despite today’s competitive market would be hard to beat.’
Simon Bradley, Discover the World
‘Our general view is that ADSI have delivered excellent service. Personal service is always a huge bonus when it comes to dealing with the sometimes complex subject of telecoms, and our account manager has always been efficient and responsive. The main purpose of moving over to ADSI was that we wanted to achieve a better and more cost-effective solution for our mobile phones. The cost savings have been significant and the contract costs are scrutinized every month by our account manager, followed by a written report and analysis. The contract is then adjusted accordingly to best suit our requirements.'
Martin Herbert, Banham Patent Locks
D A Cant Ltd, Engineering & Surfacing, in Colchester, Essex recommend the Mobile Phone Account Management service provided by ADSI to other business;
"ADSI have been a great help to our business over the years we have dealt with them. All queries are dealt with very quickly and efficiently and I would have no hesitation in recommending them to other businesses"
Sarah Verrall, D A Cant.