Showing results for 
Search instead for 
Did you mean: 

All you need to know about O2 Voicemail 901.

Level 94: Supreme
  • 147499 Posts
  • 638 Topics
  • 28333 Solutions

The most common issue we come across is customers trying to turn off voicemail and can't. 


If you want to know more about voicemail 901, read on.....


Visual Voicemail 

Visual voice mail (VVM) is a voicemail with a visual interface presenting a visual list of messages for playback. Each message can be shown on the screen, as text.

Turning on VM
Dial 1750 and press send
Turning off VM
Dial 1760 and press send

Personalise your greeting
Your Voicemail 901 is automatically set up with a default message that greets your callers. Or you can record your own. Here's how:

To change your personal greeting
Call 901 from your mobile
Press the * (star) key
You will hear the main menu options - select option 'three'
Another set of options - select 'two' to record a full greeting, or 'three' to record a new nametag
Follow the prompts to complete the change

To change your PIN
Call 901 from your mobile
Press the * (star) key
You will hear the main menu options - select option 'four'
Follow the prompts to complete the change

To retrieve your voicemail messages from a landline
Switch off your mobile phone
Dial your mobile number from a landline
Interrupt the voicemail greeting by pressing the * (star) key
Enter the four digit pin code (default is 8705)
Follow the prompts to listen to your messages

Check your messages
You can listen to your messages anytime by dialling 901 from your mobile. Or you can speed-dial Voicemail 901 by holding down 1.
Then, while you're listening to a message you can:
Press 0 to pause or continue
Press 4 to skip back 5 seconds
Press 6 to skip forward 5 seconds
You can also do any of the following during or after you've heard your message:
Press 1 to replay the message
Press 2 to save it
Press 3 to delete it
Press 5 to return the call
Press 7 to forward or reply (post-pay only)
Press 8 to hear who called you and when
Press 9 to reply by text (post-pay only)

How much does it cost?
If you're a Pay & Go customer, calls to 901 are chargeable (see your tariff for individual prices)
If you're a Pay Monthly customer, calls to 901 come out of your allowance or are charged at your tariff rate (currently 35ppm).

O2 Call Alert
What is it?
O2 Call Alert is a simple, easy-to-use alternative to Voicemail 901. It provides missed call information for up to four callers, at no extra cost, by sending you a text message update.
So, if you're on another call or your mobile's switched off, if you're out of coverage or you just don't answer in time, O2 Call Alert will tell you the caller's number and the last time they called.
But it's not just you who benefits from the service. Callers also hear a message telling them that their number's being sent to you via text message, to let you know they called. (Although, if anyone decides to withhold their number, you won't be sent the missed call text and they'll be told to call again later.)

How do I switch it on?
You can turn on O2 Call Alert any time by calling 1710 free from your mobile phone. And you call exactly the same number to switch it off.

Voicemail 901 users
If you use Voicemail 901 and you want to replace the service with O2 Call Alert, call 1710 free from your mobile. Then you just call the same number to switch back again. (Please note: you can only have one service or the other.)

How much does it cost?
If you've got O2 Call Alert it's free to receive the text update, whether you're in the UK or abroad.
If you're calling someone with O2 Call Alert you'll be charged your standard tariff rate unless you withhold your number, then it's free.

Voicemail 901 Abroad

To obtain the Voicemail roaming number call 1780 free from the mobile (whilst in the UK) and a text with the voicemail roaming number will be sent to your mobile.
Before travelling abroad, you will need to change your voicemail pin code from the default. If you don't and you are roaming on a network which doesn't support short codes, then you will not be able to retrieve 901 messages.

Pay Monthly and PAYG

How can I listen to my voicemail when I'm abroad?
Just call 901 as usual. This will work in some countries abroad. Depending on which country you're in, you'll either go straight to your messages or you'll go to your voicemail greeting. If it's your voicemail greeting, press * and enter your PIN.
In countries where this doesn't work, you'll need to call a different number for your voicemail.

Try calling your own number,  when you hear your voicemail greeting, press * and enter your PIN.

Alternatively, call +44 7802 090 100 once you're abroad. We'll send you a text with the number to call.

How much does it cost?
If you call to listen to your voicemail messages, it will cost the same as a call back to the UK.

What if I forget my PIN?
Here's how to change it:
Call 901
Press * for greetings and mailbox settings and then 4
Follow the prompts
If you forget your PIN when you're abroad, you'll need to call our customer service team and ask for your PIN to be reset. You'll need to change it before you can listen to your messages.


Contact Numbers
Pay monthly from abroad
+44 844 809 0200 Free
PAYG from abroad
+44 7860 980 202 International rates
Opening times
Monday-Friday 08:00 - 21:00
Saturday 08:00 - 20:00
Sunday 08:00 - 18:00
Sunday PAYG 09:00 - 18:00

About Call Diverts
With call diverts you can divert incoming calls to any UK fixed phone or mobile. There are four call diversion options available which you can set up from your mobile:
Not Reachable Divert
To activate ** 62 * phone number # SEND
To cancel ## 62 # SEND
To check status * # 62 # SEND
Divert calls when busy
To activate ** 67 * 901 # SEND
To cancel ## 67 # SEND
To check status * # 67 # SEND
Divert calls when there is no reply
To activate ** 61 * phone number * 11 * no seconds# SEND
To cancel ## 61 # SEND
To check status * # 61 # SEND
Divert all calls
To activate ** 21 * phone number # SEND
To cancel ## 21 # SEND
To check status * # 21 # SEND
To cancel all call diverts
To cancel ## 002 # SEND

For info on controlling the length of time your phone rings before VM answers see Josie's guide here