How to implement a call recording app in Android 10?

Question

Java

It is necessary to implement call recording on Android 10 (Xiaomi phone). Having studied the problem a little, it turned out that recording is not initially supported in the new version of android. The options that were used in previous versions record only me and not the interlocutor. Silence on the record. Maybe someone faced such a problem?

Answer 1

I will quote the FAQ of the program we use.
Important notes about the call recording feature for Android smartphones
What could be the problem
Unfortunately, the audio call recording feature for Android smartphones may not work or work incorrectly on some phone models.
Depending on the phone model and the version of Android on it, the following options are possible:
Conversations are recorded well (the voice of both interlocutors is perfectly audible).
The voice is recorded only from the microphone, ie. the speech of the employee will be well heard, and the client - very quietly. If it is very important for you to record the client’s speech well, you can use the speakerphone and then the whole conversation will be clearly audible.
The voice is not recorded at all - an extremely rare case, found on single models.
Also, call recording may work differently when using a headset, even if it works fine without it.
In fact, not everything is so scary, because. the recording function works on many phone models and you can always find phone models with good recording quality.
Recording operation depending on the version of Android
Android 10: the situation is similar to Android 9, but on some models where there is no built-in recording from the manufacturer, you may not hear the recording at all, even your voice (for example, on a number of Samsung, Xioami models).
You can read more about this and setting up recording in Android 10 in a separate detailed article on Android 10.
Android 9: call recording of both interlocutors only works on phones that have built-in call recording from the manufacturer, such as Xioami, Huawei, Meizu, Oneplus phones, a number of Lenovo, Asus, etc. models. (Important: not all models of these manufacturers have built-in recording!). On other models, the recording comes from a microphone (you will not hear or hear the interlocutor badly).
You can read more about this and setting up recording in Android 9 in a separate detailed article on Android 9
Android 6, 7, 8: recording works on almost all phones, there are single models with recording problems.
Android 5.1: recording works on many phones, but the percentage of models with good recording is lower than on phones with Android 6, 7, 8, i.e. there are more models with restrictions in the record.
Android 2, 4, 5: This group contains the most phones with recording problems, but there are quite a few phones where everything is in order.
List of Known Models
with Problems This list lists models that have been observed to have some recording problems.
Attention: this is not a complete list of problematic models, if your phone is not on this list, this does not mean that the recording function is guaranteed to work on it!
You cannot hear the second side in the recording or the recording does not work at all:
LG Nexus of all series; Alcatel 6039Y/6045Y(Idol 3); BQ-5037; TP-LINK Neffos Y5s; Xioimi: Mi9 Lite, Mi9 pro, Note 8, Note 8 pro, 8a, Mi A3; phones on Android 9, where there is no built-in record from the manufacturer. Including all Samsung models (recording there can be activated by installing another phone firmware)
Unstable call registration (some records may disappear):
samsung SM-G318H, MTS smart start 3; Lenovo A5; smartphones on Android 8.1 Go (Nokia 1, Nokia 2, Huawei Y5 Lite, Samsung J2 core, etc.) - can sometimes be solved by special settings (not always), it is better to avoid these models.
List of verified models
This list is by no means exhaustive and is based on feedback from our customers, and may also depend on the firmware version / update of the phone.
If you are interested in specific phone models, but they are not listed, you can contact our support service and we will try to find out the latest information on these models.
Full featured call recording is currently verified to be available on the following phones (please note that recording may stop working if some models are updated to Android 9):
Alcatel: 4013D, 4027D, 4009D, 4024D, 4030D, 4032D, 4033D, 4034D, 4049D , 5010D, 5038D
ARC: Benefit M8, Benefit S401, Benefit S404 Asus: ZenFone
2 Laser, ZenFone 5, ASUS ZenFone Go ZB452KG, ZenFone Live ZB501KL GO T155 Explay: Tornado, Fresh, Atom Haier: W701 Fly: IQ4413, IQ436i, IQ441, FS506, FS406, FS451, FS407, FS408, FS458, FS459, FS507
Samsung: Galaxy S3, S4, S4 Mini, S5 Mini, S7 Edge, S8, S9 Grand 2, Note 2, Note 3, A3, A5, A8 [A530F], G350E, Star Advance, Star Plus GT-S7262, J5, J7(SM-J710F), J8, GT-S5360, SM-G530H, SM-G531H, SM-G130E, SM-J320H, J1 (SM-J105/SM-J120)
Lenovo: S820, S860, S650, S660, S60 , P780, A316, A319, A328, A369, A399, A536, A2010, A1000, A6010, Vibe C2, Vibe B A2016, Lenovo A Plus
Nokia: Nokia 2, Nokia 5
HTC: Desire 310, Sensation XE
LG: G2, D325 , D335, L90, G4, G4c, G5 SE, K220, K350, LG V30
DNS: s4507
Highscreen: Zera F, Zera S, Thor, Boost 2 SE
Huawei/Honor: Y320, Y3ii, Y3 2017, Y3 Lite (Y360- U82), Y511, Y5, Y6 Pro, Honor 6A, P9 lite, Y6 Prime (2018), Honor 6c pro, P Smart, all Android 9 models with EMUI Homtom
skin: HT16
Philips: W6610, S337
Sony: Xperia Z (C6602), Xperia z1 compact, Xperia z3 compact (D5803), Xperia XA1, Xperia XZ, Xperia XZ Premium
Micromax: A79, D320, D303, Q301, Q402+
Motorola: Moto C
ZTE: V815W, V829, Blade 2, Blade A3, Blade AF3, Blade A5 PRO, Blade L5 Plus, Blade S6, Blade A465, BLADE A310, Blade A315
Xiaomi: Redmi 3, Redmi 3S, Redmi Note 3, Redmi Note 4, Redmi Note 5A, Redmi 4X, Redmi 4A, Mi 4i, Mi4c, 5A, Mi A1 A2 Go (Android 8 only), S2, Redmi 6, Redmi 6a, 7, 7a, Note 6, Note 7, Xiaomi Mi 8 Lite, Xiaomi MI 8, Xioami Mi 9, Xiaomi Mi 9 SE, Xioami Mi 9t (exactly the same model names, without any additional designations like pro, etc.)
Meizu: M3s, M5c, M3 Note, M5s, M5 Note, M6T, C9, C9pro
Vivo: Y11, Y91C (Important: in all Vivo phones, recording works only on phones for the Russian market and in Russia!!!)
Oppo: A5 (Important: in all Oppo phones, recording works only on phones for the Russian market and in Russia !!!)
Oukitel: k4000
Oysters: Arctic350
Doogee: X3, X5, X5 MAX PRO
Digma: HIT Q401, Q500
Prestigio: MultiPhone Wize R3 PSP3423
Beeline: Smart3, Smart5
MTS: Smart Sprint, Smart Start, Smart Race 4G
Megaphone: Login 1, Login+
Tele2: Mini, Midi