From: none@invalid.com   
      
   On 18/10/2025 04:38, Lawrence D’Oliveiro wrote:   
      
   >   
   > Any thoughts on what might be going wrong? Not enough current, perhaps?   
   >   
      
   In my case I have a USB2 port on my phone but it uses a USB-C connector.   
   I have USB3 A<>C and USB2 A<>C cables and the phone charges with   
   anything and everything.   
      
   Some USB A ports on PCs etc. can only provide 500mA. Some can provide 2A   
   or more. There's normally symbols to show the port is high current and   
   on laptops, also tell you the port can be used to charge something when   
   the laptop is switched off.   
      
   If your new phone has USB3 it may well be more correctly implementing   
   the CC pin feature on the C connector. The C connector end of the cables   
   has a resistor connecting CC to VBUS (+5V) and is used to signal things   
   including the charging current available.   
      
   It's possible your A<>C cable is saying that high current charging is   
   available. When used with your main PC if you plug this cable into an A   
   port which is higher current cable, the phone is told high current and   
   starts drawing higher current and the PC provides the current and   
   everyone is happy.   
      
   However, on your old 2A charger, the phone may be trying to draw over 2A   
   and the charge will be a switched mode which sees more than 2A load and   
   switches off as it sees above 2A as a fault.   
      
   The probable fix is to buy an A<>C cable with a known value resistor   
   inside which suggests buying something more upmarket than an AliExpress   
   bargain!   
      
   It all used to be simple with USB... emerging new standards and often   
   sub-par components result in stuff not working any more when it should.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)