Unfortunately it isn’t possible to check your text messages online. The only information that is stored on your online phone account is an itemized bill with the date and time a text was sent and the phone number it was sent to, but not the content of the text message that was sent. If your phone is broken, damaged or stolen, there are still a few ways you can carry on receiving text messages sent to your phone:
If you notice a fault with your phone, or it is has been damaged, then immediately remove the SIM card. This means that any new text messages sent to your number will wait to be delivered until you put your SIM into a new phone. Unless you are able to get your phone fixed then all the messages already on the phone will be lost, but removing the SIM card as soon as possible will ensure the you don’t lose any new messages.
If you phone is stolen or lost, then the same principal applies, but you don’t have the phone to remove the SIM card. So instead you need to call the company you have a contract with and ask them to block the SIM immediately and send a new one out. Once you put your new SIM into a new phone you will start receiving text messages sent since the SIM was blocked. However as mentioned above, it won’t be possible to retrieve old text messages stored on the device lost or stolen.
Although it isn’t possible to check your text messages online, depending on the reason you want to do this, there are still ways to read new text messages. For example if you are experiencing problems with your handset or it has been lost or stolen.