Orbot quit for me after Android 4.1.2. I got no response from app developers and even installing app updates never fixed anything.
Get Anonify from the Play Store and use with the stock browser for anonymous Web browsing. I just tested the app on my N3 running 4.4.2 and I was successfully connected to Tor. I used the Anonify app a lot more on my old S3 though. No issues at all.
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