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Cannot switch off channel broadcast - critical issue (int'l version)
I have HTC One V international (GSM) version, unlocked, targeted to NL/BE/Lux (Europe).
Struggling from a big issue - when going abroad from the Netherlands to some countries, eg. Poland, receiving loads of text messages like SMS from 2-digit numbers, over 50 per minute. This isn't in fact SMS, but a cell broadcast with local dating offers etc. Additionally, a pop up appears every few minutes with base station location. Doesn't matter it is my Dutch simcard (KPN) in roaming, or a local T-Mobile sim.
Normally, all phones have cell broadcast off by default and you can opt-in for these messages.
On my HTC Cell Broadcast in Call settings is always active, grayed-out so can't disable (see picture #1). Pre-selected chanels 519 & 919 (NL-Alert) - also can't delete, but phone receives other channels too (that crappy messages are chan. #20-49 and those pop-ups are on #50).
Escalated to HTC NL - first they ignored me, then after nagging on their facebook - called me back first saying "I cannot disable CB", and later that I can in the settings. I tried and cannot cause it's grayed-out as mentioned - take a look at the picture below.
Any advice? How about rooting the phone? Or need a new ROM? Actually I cannot use the phone abroad due to that spam and if can't fix it, will return it. But first wanna look for some solution, hope there is...