UPS tracking updates can sometimes experience delays for various reasons. One common cause is a package waiting in a facility for further processing.
If a parcel is not scanned promptly upon arrival or departure, tracking details might not refresh as expected. Weather disruptions, high shipment volumes (especially during holidays), or transportation delays can also impact timely tracking updates. If your package is on a truck for delivery, there may be no new information until it's either close to or delivered to its destination.
Technical issues on FedEx’s end, such as website or system maintenance, can occasionally affect updates too. If your tracking information hasn’t changed for over 24-48 hours, it may still be moving through the FedEx network without a visible update.