Simu yangu iko mfukoni.

to be

Breakdown of Simu yangu iko mfukoni.

• simu: the phone
• yangu: my
• mfukoni: in the pocket

Questions & Answers about Simu yangu iko mfukoni.

What is the role of iko here? Why not ni?

iko is the “to be (located/exist)” form used for inanimate things. Use ni for identity/equation, not for location.

• Simu yangu iko mfukoni. = It is located in the pocket.
• Simu yangu ni mpya. = It is new.

Why iko and not yuko or kiko?

They agree with different noun classes:

• yuko = class 1 (people/animates: he/she is located)
• kiko = class 7 (ki-/vi- things)
• iko = class 9/10; simu is class 9, so use iko.

What does yangu mean and why that form (not wangu)?

yangu means “my” agreeing with a class 9 noun (simu). wangu is used with m-/wa nouns (classes 1/2 or 3/4, e.g., mtoto wangu, mti wangu).

How do I say “My phones are in the pocket”?

Simu zangu ziko mfukoni.

• Noun stays simu in plural (class 10).
• Possessive: zangu (class 10).
• Verb: ziko (class 10 + -ko).

What exactly does mfukoni mean?

It’s mfuko (pocket) + locative suffix -ni = “in/at the pocket.” With containers/places like this, -ni usually implies “inside.”

Do I need to say “in my pocket” explicitly? How?

Often mfukoni is enough from context. To be explicit:

• Simu yangu iko kwenye mfuko wangu.
• Simu yangu imo mfukoni mwangu. (adds “inside” emphasis with imo)

What’s the difference between -ko, -po, and -mo (iko/ipo/imo)?

• -ko = general/default location: iko mfukoni.
• -po = specific/definite or emphatic spot: ipo hapa mfukoni (“right there in the pocket”).
• -mo = inside/interior: imo mfukoni (inside the pocket). All three are correct; they add nuance.

Can I use katika, ndani ya, or kwenye instead of -ni?

Yes:

• … iko katika mfuko. (formal/neutral)
• … iko ndani ya mfuko. (inside of)
• … iko kwenye mfuko. (very common) mfukoni is the shortest, natural option.

How do I ask “Where is my phone?”

Simu yangu iko wapi? For a person, use class 1: Yuko wapi?

How do I negate it: “My phone is not in the pocket”?

Simu yangu haiko mfukoni. To stress “not inside,” use haimo: Simu yangu haimo mfukoni.

Is the word order flexible?

Yes. You can topicalize: Mfukoni iko simu yangu. The neutral order is Simu yangu iko mfukoni.

Do I need articles for “the pocket” vs “a pocket”?

Swahili has no articles. mfukoni can mean “in the pocket” or “in a pocket”; context decides.

Can I drop yangu?

Yes. Simu iko mfukoni. = “The phone is in the pocket.” Use yangu to specify “my phone.”

How do I say it in past or future?

• Past: Simu yangu ilikuwa mfukoni. / Simu yangu ilikuwepo mfukoni.
• Future: Simu yangu itakuwa mfukoni. / Simu yangu itakuwepo mfukoni.

Which noun class is mfuko, and what’s the plural?

mfuko is class 3; plural is mifuko (class 4). Locatives: mfukoni (“in the pocket”), mifukoni (“in the pockets”).

Is a hyphen ever used, like mfuko-ni?

No. Standard modern spelling writes it as one word: mfukoni.