How to Top Up O2 Sim card by using a Voucher?

[sibipaul]

Hi...

Currently, I'm in India...

My UK O2 sim card was not used when I was there...

Now I want to Recharge/ Top Up this...

When I tried through My O2 App and Website... Top Up not success, May be because I use an Indian Credit Card...

Then...

I purchase a Voucher from an Authorized seller...

I received the Voucher Code... But I don't know, How to enter it in to the phone...

Kindly help me...

[madasaf1sh · Accepted solution]

@sibipaul 

Full details should be on the voucher. 

If no then this guide should help Guide How to Top Up (PAYG) 

[MI5]

@sibipaul 

Call 4444 free from your mobile anywhere in the world. If the country doesn't allow shortcode dialling, enter *111*# and press the call button. 

Follow the prompts to enter your voucher code.

[sibipaul]

I checked the URL Provided by @madasaf1sh 

For me *111*# method may work...

because I have the Voucher cod with me...

When I dial this number my phone shows " USSD Running " 

Then it displays UNKNOWN APPLICATION

I also tried Dialing 4444 and 4445 

No success, The call not connects...

BUT, I'm getting SMS from my other numbers, also from my friends...

I think, My number has not yet activated... That's why I'm unable to make calls...

But, How to activate in this situation?

is there any NEW USSD Code other than *111*# 

Thanks.

[sibipaul]

Top up done...

Dial 08456062277

Then Follow the IVR options to enter the Voucher code...

My top up done with in 30 seconds...

Before I was dialing this number with UK country code.

Thanks.