Can you name a proper noun that starts with a lowercase letter please?
These proper nouns have names starting with a lowercase letter. No matter where these words go in a sentence, they always stay the same spelling and capitalization as the brand named it.
iPhones are very popular.
Ipads are great for games.
There is one exception, however. If all words in a sentence are capitalized, so can the proper noun. This will usually be common in newspapers or headings.
NEW IPHONE SPARKS BUYING SPREES