Apple iPhone XS Max (512GB) has better RAM than Apple iPhone 8 Plus (256GB). Neither of them has front Flash. In terms of display resolution, Apple iPhone XS Max (512GB) has better resolution of 1242 x 2688 than Apple iPhone 8 Plus (256GB) which has resolution of 1920 x 1080. Apple iPhone XS Max (512GB) has more internal memory than Apple iPhone 8 Plus (256GB)
| Name | Apple iPhone 8 Plus (256GB) | Apple iPhone XS Max (512GB) | 
| RAM | 3 GB | 4 GB | 
|---|---|---|
| Display | 5.5 in | 6.5 in | 
| Internal Memory | 256 GB | 512 GB | 
| Battery | 2691 mAh | 3174 mAh | 
| Camera | 12 MP + 12 MP Dual | 12 MP + 12 MP Dual | 
| Price | Rs. 84900 | Rs. 79999 | 
The launch Date of the first phone is September, 2017. The cost of Apple iPhone 8 Plus (256GB) is Rs. 84900. The launch Date of the second phone is September 12, 2018. The cost of Apple iPhone XS Max (512GB) is Rs. 79999.
Apple iPhone 8 Plus (256GB) has screen size of 5.5 inches which falls short to Apple iPhone XS Max (512GB)'s 6.5 inch screen. Apple iPhone 8 Plus (256GB) has IPS LCD Screen type where as Apple iPhone XS Max (512GB) has Super AMOLED Screen type. Apple iPhone XS Max (512GB) has display density of 463 PPI & Apple iPhone 8 Plus (256GB) has only 401 PPI display density. In terms of screen to body ratio, Apple iPhone XS Max (512GB) has better screen to body ratio of ~ 84.4% than Apple iPhone 8 Plus (256GB)'s ~ 67.4%. Apple iPhone 8 Plus (256GB) has 16:9 aspect ratio where as Apple iPhone XS Max (512GB) has 19.5:9 aspect ratio.
Apple iPhone XS Max (512GB)'s larger 4 GB RAM is better for playing games and all with respect to Apple iPhone 8 Plus (256GB)'s lower 3 GB RAM. Apple iPhone XS Max (512GB) has more Internal Memory (512 GB) than Apple iPhone 8 Plus (256GB) (256 GB).
Apple iPhone 8 Plus (256GB) has 12 MP + 12 MP Dual Rear Camera in comparison to Apple iPhone XS Max (512GB)'s 12 MP + 12 MP Dual Rear Camera. Both of them stand equal in terms of Front Camera Resolution as both have 7 MP Front Camera.
Both the phones has iOS Operating System but the first one runs on version 11 and the second one on 12 version.
| Name | Apple iPhone 8 Plus (256GB) | Apple iPhone XS Max (512GB) | 
| General | ||
| Model | iPhone 8 Plus (256GB) | iPhone Xs Max 512GB | 
| Sim Type | Single Sim, GSM | Dual Sim, GSM+GSM | 
| Dual Sim | No | Yes | 
| Sim Size | Nano SIM | Nano+Nano SIM | 
| Device Type | Smartphone | Smartphone | 
| Release Date | September, 2017 | September 12, 2018 | 
| Design | ||
| Dimensions | 78.1 x 158.4 x 7.5 mm | 77.4 x 157.5 x 7.7 mm | 
| Weight | 202 g | 208 g | 
| Display | ||
| Type | Color IPS LCD Screen (16M colors Colors) | Color Super AMOLED Screen (16M colors Colors) | 
| Touch | Yes | Yes | 
| Size | 5.5 inches, 1080 x 1920 pixels | 6.5 inches, 2688 x 1242 pixels | 
| Aspect Ratio | 16:9 | 19.5:9 | 
| PPI | ~ 401 PPI | ~ 463 PPI | 
| Screen to Body Ratio | ~ 67.4% | ~ 84.4% | 
| Features | Ion-strengthened glass, oleophobic coating Screen Protection | Scratch-resistant glass, Oleophobic coating Screen Protection | 
| Memory | ||
| RAM | 3 GB | 4 GB | 
| Storage | 256 GB | 512 GB | 
| Card Slot | No | No | 
| Connectivity | ||
| GPRS | Yes | Yes | 
| EDGE | Yes | Yes | 
| 3G | Yes | Yes 1 Mbps Download | 
| 4G | Yes | Yes | 
| VoLTE | Yes | Yes | 
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot | 
| Bluetooth | Yes, v5.0 | Yes, v5.0 | 
| USB | Yes, Proprietary v2.0 | Yes, Proprietary v2.0 | 
| Extra | ||
| GPS | Yes, with A-GPS Support | Yes, with A-GPS Support | 
| Fingerprint Sensor | Yes | |
| Face Unlock | Yes | |
| Sensors | Accelerometer, Gyroscope, Proximity, Compass, Barometer | Accelerometer, Gyroscope, Compass | 
| 3.5mm Headphone Jack | No | No | 
| NFC | Yes | Yes | 
| Water Resistance | Yes, 1 m upto 30 min | Yes, 2 m upto 30 min | 
| IP Rating | IP67 | IP68 | 
| Dust Resistant | Yes | Yes | 
| Camera | ||
| Rear Camera | 12 MP + 12 MP | 12 MP + 12 MP | 
| Auto Focus | Yes | Yes | 
| Features | Face detection, Smile detection, Geo tagging, Panorama, Touch to focus | Face detection, Smile detection, Geo tagging, Panorama, Touch to focus | 
| Video Recording | 4K @ 60 fps UHD | 4K @ 60 fps UHD | 
| Flash | Yes, Quad-LED | Yes, Quad-LED | 
| Front Camera | 7 MP | 7 MP | 
| Technical | ||
| OS | iOS v11, upgradable to v12.1 | iOS v12 | 
| Chipset | Apple A11 | Apple A12 | 
| CPU | 2.39 GHz, Hexa Core Processor | 2.49 GHz, Hexa Core Processor | 
| GPU | Apple GPU (three-core graphics) | Apple GPU (4-core graphics) | 
| Java | No | No | 
| Browser | Yes, supports HTML5 (Safari) | Yes, supports HTML5 (Safari) | 
| Multimedia | ||
| Supports | MMS, Instant Messaging, Voice Commands | MMS, Instant Messaging, Voice Commands | 
| Yes, with Push Email | Yes, with Push Email | |
| Music | MP3, WAV, AAX+, AIFF | MP3, WAV | 
| Video | MP4, H.264 | MP4 | 
| FM Radio | No | No | 
| Document Reader | Yes | Yes | 
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery | 
| Size | 2691 mAh, Li-ion Battery | 3174 mAh, Li-ion Battery | 
| Fast Charging | Yes | Yes | 
| Wireless Charging | Yes, Qi wireless charging | Yes, Qi wireless charging | 
| Music Playback Time | 60 hours | 65 hours |