[Q] 3G problem on Note - Galaxy Note GT-N7000 Q&A, Help & Troubleshooting

Hello
I am a lucky user of Galaxy Note.
I have also a problem with 3G/HSPA modem.
There is mostly working connection,where my download speeds reaches up to 8Mbps,however suddenly it stops transfering the data.
Then I must switch on/off the airplane mode and it works again.
So,where can the problem be? It occurs few times per day and it is very annoying.
I am running on Orange Slovakia network.
Is there any way to upgrade radio/modem stack?
Thanks,Tomas.

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Same - Stuck on 3G for Data
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I also have this issue, it has been more and more prevalent lately. The phone will be working fine on 3G, then data freezes as it switches to 4G, maybe resumes for a split second, then switches back to 3G. Sometimes 3G doesn't even work then, sometimes it keeps looping between the two. It's ridiculously frustrating to be streaming music while driving and it just stops because it can't figure out which mode to be in.

All networks lag or not work after updating s6012 to jb

After updating my S6012 aka Samsung Galaxy Music Duos to JB by looking at this guide..
http://forum.xda-developers.com/showthread.php?t=2415442
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Anyone else have same problems??
First time i did it worked fine then few days ago i sent the phone into bootloop and then did it second time two days ago..
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Did you factory reset after the install?
verify the connection first
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[Help] Note 5 stock - update MM OTA - 3G connection became very slow/unstable

Hello everyone,
I'd realized an annoying issue with my Note 5. Mine is completely stock and was updated to MM via OTA about 2 weeks ago
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Uppppppppppppppppppppppppp

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