The most reliable way to dial any telephone number on a GSM mobile, especially when roaming internationally, is to dial the number in full international format, beginning with the country code (including the plus sign).
The country code for the United States (and Canada and certain nearby islands) is +1.
When roaming in the US, you may be able to dial US numbers with just the area code and number; for example, 816-555-0123. However, if this method fails, use the full international format +1 816 555 0123, including the plus sign.
For American numbers, prefix with country code +1
If you are in the UK, dial the mobile number. If you are outside the UK, dial the international access prefix, then the country code for the UK (+44), and then the mobile number without the leading 0.
1
If you are ringing from the USA or Canada, dial the same number as normal. The network will locate the phone - you are not expected to guess where in the world the mobile phone is currently! From the rest of the world, prefix the number with the USA country code +1
just get there number and ring them
If you're calling a UK mobile that is physically in Spain, just dial the UK mobile number. It does not matter where the mobile is physically located. If you're calling a Spanish mobile, dial 00 (the prefix for outbound international calls from the UK), then 34 (the country code for Spain), and then the 9-digit Spanish mobile number. If you're calling from a GSM mobile phone, you can dial +34 (including the plus symbol) instead of 00 34.
To ring a Spanish mobile phone (anywhere in the world that it may be physically located), you dial your international access prefix (most commonly 00, or use the plus sign on a GSM mobile), followed by country code 34 for Spain, and then the 9-digit Spanish number. To ring a mobile from some other country that happens to be physically in Spain, dial the number exactly the same way you would if it were in its home country.
07516322898 ring him =]
To call any German telephone number (mobile or otherwise) from the UK, replace the trunk prefix 0 of the German domestic number with +49 (calling from a mobile) or 00 49 (otherwise).
A toll-free telephone number can be programmed to ring to any telephone number, including a mobile phone. When you set up toll-free service, you just give the mobile number as the number to ring for the toll-free number.
Dial the UK mobile number exactly the same way you do when the mobile is at home in the UK. The mobile network will automatically locate it.
To call a mobile phone that is roaming in another country, you dial the number exactly the same way you do when the mobile is in its home country. The mobile network automatically re-routes the call.If you are in Portugal, just dial the 9-digit mobile number beginning with '9'. From outside Portugal, prefix the mobile number with country code +351.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)