need help removing h+ network (galaxy core +)

[dinlo]

as my s+ gave in after four years of active use (including frequent use as hotspot) i purchased a galaxy core + running jellybean (4.2.2).

due to that it will try to connect to highest speed broadbandversion (which is h+) it connects to a mast roughly 60 km away. this causes extremly high ping and huge packetloss, thus i want to disable h+ as to run on h (mast: 500 m) which would mean i get the normal speed of my s+ back as well as a more stable and faster lan platform for the small lans i usually host.

while i do want to avoid rooting if it is needed to disable h+ i will use it

if adjusting settings at hardware level to search for fastest internet (not newest that CAN get most broadband) is only way i will do so as well.

edit: the 60 km is an rough estimate from my house (7 km west of wargarda, sweden) to the mast in central gothenburg

 

[dinlo]

the phone bricked itself two days ago, the firmware in the phone was faulty and after getting a new one with correct firmware it goes up to 40 mbps on h+ but if it is under heavy usage it will after a while throttle the internet due to thermal issues

there is one thing i want to say to anyone who see this thread, it is likely thermal throttling or faulty firmware if your problem if your core plus becomes slow after a while of internet-usage