readme: android kernel hang more precise info

docs/readme.eng.md

@@ -943,8 +943,9 @@ Example : `--uid 1:3003`
 
 In iptables use : `! --uid-owner 1` instead of `! --uid-owner tpws`.
 
-Nfqws should be executed with `--uid 1`. Otherwise on newer androids kernel may partially hang.
-Looks like processes with certain uids can be suspended. Suspended nfqueue handler is a big problem.
+Nfqws should be executed with `--uid 1`. Otherwise on some devices and newer androids
+kernel may partially hang. Looks like processes with certain uids can be suspended.
+With buggy chineese cellular interface driver this can lead to device hang.
 
 Write your own shell script with iptables and tpws, run it using your root manager.
 Autorun scripts are here :