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General

NameOppo A1Walton Primo NH4-
ModelA1Walton -
PriceTK. 20,9904,999-

Network

Network TypeGSM / HSPA / LTEGSM / 3G-
Network 2GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-
Network 3GHSDPA 850 / 900 / 1900 / 2100WCDMA 900 / 1900 / 2100 MHz-
Network 4GLTE--
Network SpeedHSPA 42.2/5.76 Mbps, LTEHSPA/HSPA+-
Network GPRSYesYes-
Network EDGEYesYes-

Display

Display TypeS-IPS LCD capacitive touchscreen, 16M ColorsFWVGA+ IPS capacitive touchscreen, 16M colors-
Display Size5.7 inches, 83.8 cm25.7 inches, 81.4 cm2 (~77.3% screen-to-body ratio)-
Display Resolution720 x 1440 pixels, 18:9 ratio480 x 960 pixels, 18:9 ratio (~197 ppi density)-
Display MultitouchYes - Color OSYes-
Display Density282 ppi density--
Display Screen Protection-2.5D Curved glass-

Camera

Primary Camera13 MP (f/2.2, 1/3`, 1.12 µm), phase detection autofocus, LED Flash5.0MP, f/2.0-
Secondary Camera8 MP5.0MP-
Camera FeaturesGeo-tagging, Touch focus, Face detection, HDR, panoramaAutofocus, LED flash, Geo-tagging, touch focus, face detection-
Video[email protected][email protected]-

Body

Body ColorBlue, Red, WhiteDark Blue, Black, Red-

Launch

Launch AnnouncementMarch, 2018July, 2019-
Launch DateRelease April 1st, 2018Released July, 2019-

Platform

Operating SystemAndroid 7.1 Nougat Android -
OS Version-8.1 (Oreo)-
CPU-8.1 (Oreo)-
GPU-8.1 (Oreo)-

Memory

Memory Internal64 GB8GB-
Memory ExternalmicroSD, up to 128 GBmicroSD, up to 64GB (dedicated slot)-
Ram4 GB 1GB-

Battery

Battery TypeNon-removable Li-Ion BatteryRemovable Li-Ion-
Battery Capacity3180 mAh 2400 mAh-

Multimedia

Fm RadioYesYes-

Sound

AudioVibration, MP3, WAV RingtonesVibration, MP3, WAV ringtones-
LoudspeakerYesYes-
3.5mm JackYes - Active noise cancellation with dedicated micYes-

Connectivity

WiFiWi-Fi 802.11 b/g/n, Wi-Fi Direct, HotspotWi-Fi 802.11 b/g/n, hotspot-
Bluetooth4.2, A2DP, LE4.2, A2DP, LE-
USBmicroUSB 2.0microUSB 2.0-
GPSYes, with A-GPSYes, with A-GPS-

Features

SensorsAccelerometer, proximityAccelerometer, proximity, light-
MessagingSMS(threaded view), MMS, Email, Push EmailSMS(threaded view), MMS, Email, IM-
BrowserHTML5HTML5-
JavaNoNo-

Other

Other FeaturesMP4/H.264/FLAC player, MP3/eAAC+/WAV player, Document viewer, Photo viewer/editorOTG supported-
Made By-Bangladesh-