NR7101 - Help me figure our why my 5G is so slow...

caligula
caligula Posts: 6  Freshman Member
First Comment Friend Collector

TLDR; my NR7101 reaches 113/44 MBit/s while my phone, at the exact same location, reaches > 785/125 MBit/s. Why?

NR7101:

  • 1.00(ABUV.10)C0 and RG502QEAAAR13A02M4G (waiting on the other thread to land somewhere on upgrading model to A04, but all previous modem versions had the same issue)
  • Bridge mode, disabled UMTS, Preferred Access Technology = AUTO (5G-NSA leads to the same result, no connection AFAICT in 5G-SA), PTS = Combine, Band auto selection, PLMN Auto selection, NO LTE or 5G lock
  • Clean error/dropped packets for both WAN and LAN
  • IP Passthrough disabled, PLMN=22801, TAC = 3333, Access Technology NR-NSA EN-DC, band = LTE_BC1, current CA combination of BC1, BC3, BC7, BC28, BC3, N78

iPhone:

  • iPhone 13 Pro, IOS 18.0.1, 5G set to Auto (not purely SA)
  • Same 5G subscription (shared) as the NR7101 (but different SIM obviously)
  • TAC=3333, PLMN=228 01, 5G-NSA, 5G band = N78, 100MHz, LTE = 7 in screen below, but has been 3 as well, so changes), same as what I see on the NR7101

As such, it seems that the iPhone syncs up to the same tower/antenna, share the same two bands (BC1 and N78), but doesn't use as many others (BC3, BC7, BC28), but the performance is 5-6x weaker on the NR7101. Any thoughts? I've tried pretty much everything I could find in those forums, but nothing has worked. What am I doing wrong? am I supposed to lock to some 5g endpoint only?

Thanks!

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All Replies

  • SELBERG
    SELBERG Posts: 352  Master Member
    5 Answers First Comment Friend Collector Third Anniversary

    Try this, in manual band selection only check BC3, BC7, N78.

    Do a speedtest, then add BC28 and another speedtest.

    Uncheck BC28 and add BC1 and do another speedtest.

    You have to wait between every change until you get internet…..

    Write your results here……

  • caligula
    caligula Posts: 6  Freshman Member
    First Comment Friend Collector

    OK!

    So, …

    …with BC3, BC7 and N78: 113/32 [mbit/s] (91/92 with speedtest.net from a browser)

    …adding BC28: 115/26 [mbit/s]

    … removing BC28 and adding BC1: 91/36 [mbit/s]

    ⇒ no real impact :(

  • SELBERG
    SELBERG Posts: 352  Master Member
    5 Answers First Comment Friend Collector Third Anniversary
    edited October 15

    It looks like your lan speed only 100M not 1000M/Full.

    Am i right?

    Check your system info.....

  • caligula
    caligula Posts: 6  Freshman Member
    First Comment Friend Collector

    No, I'm in Gigabit mode (and even @ 100mbit/s that would probably not impact the calculation of the embedded speedtest happening in diagnostics mode on the device)

  • SELBERG
    SELBERG Posts: 352  Master Member
    5 Answers First Comment Friend Collector Third Anniversary

    Hmmm, ever tried with phonesim in your modem?

  • caligula
    caligula Posts: 6  Freshman Member
    First Comment Friend Collector

    No, are you suspecting my SIM is limited in bandwidth?

  • PeterUK
    PeterUK Posts: 3,459  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary
    edited October 15

    some Sim plans limit you to 100Mb I know my EE plan does when doing a speed test it overshoots then limits

  • Mayone78
    Mayone78 Posts: 42  Freshman Member
    First Comment Friend Collector First Anniversary

    same here after last LTE firmware upgrade. Before this update I was on 600Mbps/100Mbps; after updating 50Mbps/70Mbps

  • SELBERG
    SELBERG Posts: 352  Master Member
    5 Answers First Comment Friend Collector Third Anniversary
  • Schleier
    Schleier Posts: 3  Freshman Member
    First Comment

    … same here. For 2 years always 300 to 600 MB. And now suddenly only 30 to 50 MBs.

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