... what do you say one should do to force the Huawei B593 router to search for the new tower after I change antenna direction to new tower?
@TJB, referring back to
this post, if you wanted to be obstinate and try sajunky's procedure anyway, this would be the recipe, I think :
Assuming you've already made your antenna adjustment (the swing from one tower to another) ...
1. Go to Internet / Network Connection / Connection Mode; select "Manual" and click "Submit (usually it's set to "Always On".
2. When the page refreshes, you'll see a "Disconnect" button you didn't have before. Click it.
3. Status should now show as "Disconnected".
4. Now you should also see an option for "Network selection". Change from Auto to Manual, which should give you a drop-down box, under which are "Search" and "Register" buttons.
5. Click "Search" and wait. Hopefully you get a list of available 4G services other than the one you were registered on (ie 8ta(4G)).
6. Select a 4G network other than the one you were registered on and Click "Register". It'll fail because you don't have a SIM provisioned for that network, but hopefully it clears any memory of the last-connected tower which the router might have retained.
7. Click "Search" again, re-select your home network provider (8ta) and click "Register".
At Step 5, if you only see your "home" 4G network, you could also try setting the network mode (up top) to 3G (or 2G), searching again and attempting to register for 3G/2G on a non-home network (Vodacom, MTN etc) before changing back.
Unfortunately there's still no way of confirming whether or not this is any more effective than the other procedures, but maybe give it a try and see how you do.