Blackberry mails send / receive problem

This is regarding mails send/receive problem faced sometimes on your blackberry handset. One source of the problem is switching between different carriers when a user is travelling, this can happen. Pls. follow the below given procedures to solve the issue.

Solution 1:

1. On your blackberry handset press blackberry key. This will bring full menu on screen.
2. Scroll down to bottom and select Options. Further go to -> Advanced Options -> Host Routing Table
3. Press blackberry key and select “Register Now”. It will send a registration SMS. When you do a "Register Now" it basically reaches out to what ever carrier that you're attached to at the moment and requests that their system checks their settings compared to yours to make sure that everything is connected properly.
4. Then switch off BB handset, remove battery and again re-insert after a minute.

Solution 2:

1. On your blackberry handset press blackberry key. This will bring full menu on screen.
2. Scroll down to bottom and select “Manage Connections”.
3. Inside “Manage Connections” menu, click on Mobile Network Options.
4. Here “network selection mode” is set to “automatic” by default. Scroll to “Automatic”, press scroll button and change this mode to “Manual”.
5. This will scan and show the available networks. Select one of the network and check for send / receive. If it doesn’t work check with another network.