> International Roaming
BT Mobile customers can use their mobile phone whilst
abroad (subject to the country having a roaming agreement
in place with BT).
Before the customer goes abroad they should call
Customer Services by dialling 150 (Mon-Sun 08:00-22:00)
from their BT Mobile or 0800 0322 111 (Mon-Sun 08:00-22:00)
from a landline, to check that we have partner networks
in the country they are visiting.
All handsets are provided with International/Premium
Rate Call Barring activated as standard, so if International
Roaming is required, this barring must be removed
before they leave the UK to travel abroad.
Customers may find that their mobile handsets automatically
connect to the network with the strongest signal,
as opposed to one of BT Mobile’s roaming partners.
When customers switch their phone on, they will need
to wait a little longer than usual for the network
name or code to appear on the screen. If no network
name is displayed the customer will need to go to
'Network Selection' in the 'Settings' menu and choose
'Manual'. When the list of available networks is
shown, the customer chooses the one they want to
use. Customers will need to manually select a network
at this point.
Using the Right Handset
• Networks around the world use different technology
and different radio bands. BT Mobile is a GSM network
on 1800MHz. To roam on a particular network customers
need a compatible phone.
• Dual, Tri or Quad Band refers to the radio frequencies
on which the mobile phones can operate on. The three
main international frequencies ranges are 900MHz,
1800MHz, and 1900MHz. There is a fourth band - making
a phone Quad Band which is 850MHz.
•
Dual Band phones use 900MHz and 1800MHz frequency
bands. It will automatically switch between the frequencies,
even during a call. A Dual Band phone allows calls
in main land Europe and the majority of countries
except America. Most of the world’s GSM networks
use this frequency.
• Tri Band adds the frequency 1900MHz, which is common
in the USA. Having a Tri Band phone means it will
function in the majority of states in the USA. Customers
wishing to use their phone in the US, Caribbean,
Central and South America will need to have a Tri
Band handset.
• Quad Band adds the additional frequency of 850MHz.
Quad Band handsets may be required in certain areas
of the USA and South America.
• NOTE: In the USA 1900MHz and 850MHz GSM services
are supported. In South America many countries only
have 850 MHz GSM service.
The BT Mobile Roaming Experience
Whilst BT customers are roaming abroad they will
need to use the international dialling code, if
calling the UK +44 will be used
If this code is not used then customer experience
will vary:
If the number is recognised on the network then
the customer is routed to this number
A foreign announcement may be played
An unobtainable tone is played to the customer
Roaming
SMS
Whilst roaming, a BT Mobile customer is able to
send and receive SMS as if they were on their
home network
(subject to roaming agreements)
It is recommended that customers use the international
format when sending an SMS
