I am still relatively new here since Summer. I usually try to get all shipped by epacket but recently, I ordered one with aliexpress standard shipping and also premium. To US at my surprise, the aliexpress standard method took only 7 days and they converted to USPS tracking after shipping and the tracking was great and better than the epacket.
However in the past, other seller shipped by standard method and the tracking disappeared/stopped once they left China and no where to be tracked if even delivered. I guess it is all up to the seller and what shipping company they use. Premium to UK, i paid more and it was sent by EMS express, then seller shipped out late maybe b/c it is not typical everyday method?, took more time to ship out and that kind of makes the premium or express pointless. But after shipped, it took about 7 days to deliver. I have used FexIP, DHL with extra charge but all sellers took longer to ship out but once shipped they go fast.
epacket is really on and off and somewhat unpredictable. They meet the promised range of 12-20 days but sometimes, early as 10 days up to 25 days and tracking is also unpredictable. Now the Aliexpress order page gives you estimated delivery time but they are not quite accurate, only general. I have occasions that package stuck somewhere with various reasons and the exception is never to be found anywhere in the system, unless we inquire and the seller went to find out what happened and remedy the issues. It is incredible how many issues I've met with epacket delivery in such short period time. It gives you tracking numbers but the delivery is not streamlined as it should be. It is cheapest method their government sponsor but quality control is not enough for anyone to feel great about.
If your epacket tracking has no update for 5 days inquire. if 10 days? there is definitely something is wrong.