diff --git a/README.md b/README.md
index 19022e7..f522fd1 100644
--- a/README.md
+++ b/README.md
@@ -1,19 +1,78 @@
-# Device Tree for Samsung Galaxy A Series (Exynos7885) (2019)
-The Galaxy A10/A20/A20e/A30/A40 (codenamed "a10/a20/a20e/a30/a40") is a low-end smartphone from Samsung. It was released on 2019 April.
-## Specs
+# Device Trees for universal7885 unified
+The Samsung Galaxy A10,A20,A20e,A30,A40 are budget smartphones from Samsung. These are announced and released in the year 2019.
 
-|        Component        |          Specification            |
-| :---------------------- | :-------------------------------- |
-| Chipset                 | Exynos 7885                       |
-| Memory                  | 3/4 GB                            |
-| Storage                 | 32GB                              |
-| Battery                 | (differs from model) mAh          |
-| Dimensions              | 158.4 x 74.7 x 7.8 mm             |
-| Display                 | 720 x 1560 pixels, 19.5:9, 268PPI |
-| Release Date            | 2019 April                        |
+# Device List
+- Samsung Galaxy A10 (exynos7884)
+- Samsung Galaxy A20 (exynos7884)
+- Samsung Galaxy A20e (exynos7884)
+- Samsung Galaxy A30 (exynos7904)
+- Samsung Galaxy A40 (exynos7904)
 
-## Device Picture
+# Why universal7885? isn't that another SoC made by Samsung?
+- yes it does, exynos7884 and exynos7904 are 2nd and 3rd revisions of exynos7885 with lower CPU and GPU clockspeed and have newer Mali GPU drivers
 
-![Galaxy A20](https://fdn2.gsmarena.com/vv/bigpic/samsung-galaxy-a20e.jpg "Galaxy A20e")
+## Device specifications (Galaxy A10)
+| Feature                 | Specification                                                   |
+| :---------------------- | :---------------------------------------------------------------|
+| Chipset                 | Samsung Exynos 7884B (14 nm)                                    |
+| CPU                     | Octa-core (2x1.6 GHz Cortex-A73 & 6x1.35 GHz Cortex-A53)        |
+| GPU                     | Mali G71 MP2                                                    |
+| Memory                  | 2/4 GB                                                          |
+| Shipped Android Version | 9.0                                                             |
+| Storage                 | 32 GB                                                           |
+| Battery                 | Li-Ion 3400 mAh, non-removable                                  |
+| Display                 | 6.2 inches, 95.9 cm2 (~81.6% screen-to-body ratio)              |
+| Rear Camera             | 13 MP, f/1.9, 28mm (wide), AF                                   |
+| Front Camera            | 5 MP, f/2.0                                                     |
+
+## Device specifications (Galaxy A20/A20e)
+| Feature                 | Specification                                                   |
+| :---------------------- | :---------------------------------------------------------------|
+| Chipset                 | Samsung Exynos 7884 (14 nm)                                     |
+| CPU                     | Octa-core (2x1.6 GHz Cortex-A73 & 6x1.35 GHz Cortex-A53)        |
+| GPU                     | Mali G71 MP2                                                    |
+| Memory                  | 3 GB                                                            |
+| Shipped Android Version | 9.0                                                             |
+| Storage                 | 32 GB                                                           |
+| Battery (A20)           | Li-Ion 4000 mAh, non-removable                                  |
+| Battery (A20e)          | Li-Ion 3000 mAh, non-removable                                  |
+| Display (A20)           | 6.2 inches, 95.9 cm2 (~81.6% screen-to-body ratio) (sAMOLED)    |
+| Display (A20e)          | 5.8 inches, 82.6 cm2 (~80.4% screen-to-body ratio) (PLS IPS)    |
+| Rear Camera 1           | 13 MP, f/1.9, 28mm (wide), AF                                   |
+| Rear Camera 2           | 5 MP, f/2.2, 12mm (ultrawide)                                   |
+| Front Camera            | 8 MP, f/2.0                                                     |
+| Fingerprint             | Rear-mounted                                                    |
 
 
+## Device specifications (Galaxy A30)
+| Feature                 | Specification                                                   |
+| :---------------------- | :---------------------------------------------------------------|
+| Chipset                 | Samsung Exynos 7904 (14 nm)                                     |
+| CPU                     | Octa-core (2x1.8 GHz Cortex-A73 & 6x1.7 GHz Cortex-A53)         |
+| GPU                     | Mali G71 MP2                                                    |
+| Memory                  | 3/4 GB                                                          |
+| Shipped Android Version | 9.0                                                             |
+| Storage                 | 32/64 GB                                                        |
+| Battery                 | Li-Po 4000 mAh, non-removable                                   |
+| Display                 | 6.4 inches, 100.5 cm2 (~84.2% screen-to-body ratio)             |
+| Rear Camera 1           | 16 MP, f/1.7, 27mm (wide), PDAF                                 |
+| Rear Camera 2           | 5 MP, f/2.2, 12mm (ultrawide)                                   |
+| Front Camera            | 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm                       |
+| Fingerprint             | Rear-mounted                                                    |
+
+
+## Device specifications (Galaxy A40)
+| Feature                 | Specification                                                   |
+| :---------------------- | :---------------------------------------------------------------|
+| Chipset                 | Samsung Exynos 7904 (14 nm)                                     |
+| CPU                     | Octa-core (2x1.8 GHz Cortex-A73 & 6x1.7 GHz Cortex-A53)         |
+| GPU                     | Mali G71 MP2                                                    |
+| Memory                  | 4 GB                                                            |
+| Shipped Android Version | 9.0                                                             |
+| Storage                 | 64/128 GB                                                       |
+| Battery                 | Li-Po 3100 mAh, non-removable                                   |
+| Display                 | 5.9 inches, 85.5 cm2 (~85.5% screen-to-body ratio)              |
+| Rear Camera 1           | 16 MP, f/1.7, 26mm (wide), PDAF                                 |
+| Rear Camera 2           | 5 MP, f/2.2, 13mm (ultrawide)                                   |
+| Front Camera            | 25 MP, f/2.0, 25mm (wide), 1/2.8", 0.9µm                        |
+| Fingerprint             | Rear-mounted                                                    |