iirc i read if VoLTE only available on 65D, i also need someone here to confirm, if they are using 22D but manage to use VoLTE
it doesn't matter what i think, i was just stating facts, and he also said it is base on his own experience, are you calling him a liar? 
i totally disagree with your idea here, because if i were with that mentality, i wouldnt be able to find out solution to my 0.1mbps i150 speed, instead of digging up info and discussing with other people, i would just dump digi and move on, probably if the first person that found out if i150 would work much better with b618 with lock function had this mentality, many of these people here wouldnt be still using their i150, because they wouldnt know 
oh look another case 

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btw i finally just received my B618-22D 2 days ago, after some extensive test for the last couple of days i want to share some of my findings, which i hope it can open up to some discussion that in the end it can enlighten us (especially me  )

- first time use without changing band with hwmanager, at the same spot where i used to place my phone, it is still automatically locked to band 3 (which is the worst speed in my area), RSRP got better by abit (from average of -97dB to -89dB), i was happy about it, but right away got disappointed by the speedtest, because it did about the same when using phone.

- changing to every band available (3, 7, 8) also resulted on the same speed as it was using phone. except when it was on b3+b7 or b3+8, its acting weird, its either the download speed or the upload is higher than usual, but the other one will be much lower than usual (for example using band 8 in my area during day time averaging 6-10mbps down, 3-6mbps up, when using b3+b8 on the same time and spot, its 20mbps down with 2mbps up or vice versa)

- moving around the modem to different spot, this is where things get interesting, the best spot for my phone isn't necessary the best spot for the modem. apparently there were spots where phone was at its worst, but it did good for the modem. with this finding, i went to move it around to as many spots possible, running probably more than hundreds of speedtest while monitoring the signal stats etc.

- managed to get 30mbps+ download when i put the modem at the right spot (finally abit satisfied after paying RM150 before tax every month for more than a year)

- on the 2nd day i was surprised the modem was not moved at all, but the speed is much slower, around 6-8mbps or lower across all available band, this is where i started to analyze more the stat shown in hwmanager

[attachmentid=10235626]

on the 2nd day whats different on my stat is the SINR, from a simple google i found out if it is related to interference, when it is really bad doesnt matter if RSRP and RSRQ are good or excellence, the speed will still be slow, and unfortunately even at the same exact spot, SINR reading will vary to some extreme difference during different time, after all, interference is out of our control, my solution to this only to move the modem around till i get good SINR reading

- the bandwidth reading in mhz might be the congestion related indicator, because no matter where i move the modem, it will still read the same, at certain time it will change, but some band only maxed out to certain mhz, for example band 8 only maxed out at 5hz

- the bandwidth reading is like a ceiling (cap) of the speed, for example:

[attachmentid=10235627]
[attachmentid=10235628]
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[attachmentid=10235629]
[attachmentid=10235630]
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[attachmentid=10235631]
[attachmentid=10235632]

4G -44 is B3+B7

4G 900 FDD is B8

4G 2600 FDD is B7

- as we can see here, signal strenght, signal quality, and noise level are the best at band 8, but the speed test shown the lowest by far among the 3, because the bandwidth reading is 5mhz
  as for band 7, even tho the signal strength is the worse, but it gives the highest result because the bandwidth reading is the highest at 20mhz, but this is because the SINR (noise) reading is good, at different test i got the SINR at poor reading, with bandwidth 20mhz, the speed is below 10mbps

i hope you can see what i see here, and i hope people who understand more about this matter would help me clarify these things

sorry for the long post, enjoy your Monday everyone