You will receive an email update when your decision has been returned to the Visa Application Centre. If you can’t access email easily or would like more detailed tracking information, you may also be able to get updates by SMS sent directly to your phone. Check whether this service is available at the Visa Application Centre you are visiting.
You can also track your visa application status online. Use the Reference Number starting with usually GW which is present on the invoice/receipt issued by the Visa Application Centre and your last name to access this service.
You will be asked for your GW Reference number e.g. GWF123442311 and Your Last name.
https://visa.vfsglobal.com/pak/en/gbr/track-application