Technology Gallery Vodafone 4G services launched: How Delhi/NCR users can upgrade Vodafone has finally launched its 4G services in Delhi and NCR on 1800Mhz band. If you are still wondering how to get a Vodafone 4G SIM, here is a quick guide Vodafone has finally launched its 4G services in Delhi and NCR on 1800Mhz band. If you are still wondering how to get a Vodafone 4G SIM, here is a quick guide that will take you through the process. Also, Vodafone is currently giving out the 4G SIM for free for postpaid users. For starters, who need to check if your smartphone is compatible with the network. You can do so by sending an SMS with the phrase 4GCHECK to 199. Users can also check if their smartphone is compatible with 4G on Vodafone website. Once it is confirmed that your smartphone supports the 4G network, you can place a request for a 4G SIM by calling the call centre or sending an SMS 4GSIM to 199. Vodafone is promising same day-door delivery for requests placed before 4pm. Do note that you can use 4G on roaming only if you are in a Vodafone 4G circle, going to another Vodafone 4G circle, and have selected Vodafone network in a 4G zone/area. Also, customers can use their current SIM to activate the 4G SIM. They need to send an SMS SIMEX to 55199. When prompted they need to SMS last 6 digits of the SIM to 55199. If 6 digits entered, match the first string of 19 digits, the new SIM will be activated in 20 minutes. After the successful SIMEX, users need to turn on Mobile Data and then enter www in Access Point Name, in the Network settings of their smartphone. In the Network mode, they need to select LTE/4G. Then check for coverage by looking for 'LTE' or '4G' on the signal. Restart your phone and the 4G should work. In case of complaints customers can call 199 or 198 for any issues.