We often observe phonics instruction that has some strengths but also some gaps. Effective phonics instruction is multifaceted. You’ve likely already heard about the need for explicit instruction. Explicit instruction is direct, precise, and unambiguous (e.g., telling children what sound the letters sh represent together, rather than making the connection indirectly or asking them to figure it out themselves). You probably also realize the need to apply general learning principles (e.g., specific feedback). Some other facets that must be present are:
The primary vowels are like this as well. We would have been much better off if they were named by their short sounds (/a/, /e/, /i/, /o/, and /u/, as in pat, pet, pit, pot, and putt), because those are more common in the words read by beginning readers than their long vowel sounds (the letters’ names)—but no such luck. Letter names are also challenging for young readers because they aren’t consistent in whether the commonly associated sound is at the beginning or end of the name. For example, in Mm/“em,” the letter’s target sound is at the end of the letter name, but in Jj/“jay,” the target sound is at the beginning. That means for letter names to help children, they must memorize whether the target sound is at the beginning or end of the name.
Children are then introduced to vowel digraphs. A digraph is two vowels that together make one sound such as: /oa/, /oo/, /ee/, /ai/. They will move onto sounding out words such as deer, hair, boat, etc. and will be taught about split digraphs (or 'magic e'). They will also start to read words combining vowel digraphs with consonant clusters, such as: train, groan and stool.
The NRP analysis indicated that systematic phonics instruction is ready for implementation in the classroom. Findings of the Panel regarding the effectiveness of explicit, systematic phonics instruction were derived from studies conducted in many classrooms with typical classroom teachers and typical American or English-speaking students from a variety of backgrounds and socioeconomic levels.
In 2018 The Association for Psychological Science published an article entitled Ending the Reading Wars: Reading Acquisition From Novice to Expert. The purpose of the article is to fill the gap between the current research knowledge and the public understanding about how we learn to read, and to explain "why phonics instruction is so central to learning in a writing system such as English". 
Phonics reading is also necessary for the improvement of a child's reading comprehension. It is impossible for somebody to understand a word that is not properly pronounced. When a child learns how to pronounce a word very well, the child will be able to comprehend what he or she reads. Reading comprehension is another benefit that can be derived from phonics reading. Phonics reading will also help a child in acquiring more vocabulary on daily basis. When a child is able to pronounce a word correctly, the child will be able to understand the word. Children normally use in their words that they understand in their daily speech.